I saw the 1,000 meters of permafrost mentioned. I wasn't able to find the depth which would have accumulated since the last ice age. If an ice age is usually preceded by an arctic thaw, the tundra material before the last ice age would have already decomposed and won't contribute more methane.
Yes, I was referring to former topsoil. Rather than Kansas having hundreds of feet of accumulated topsoil, the Kansas Geological Survey doesn't even map it. Perhaps erosion is so powerful that it washes away topsoil faster than it can be formed -- but if that were the case it should be gone. If permafrost material accumulates faster than topsoil accumulates in faster-growing warm climates, either topsoil is removed faster in warmer climates or the removal is blocked by the arctic climate. (I used the term "permafrost material" because I suspect that the many shallow lakes contribute an amount similar to that of trundra plants).
And I agree that oxygen wouldn't penetrate thawed permafrost very deeply, which is why I was wondering if anaerobic bacteria generate methane. They do, so we don't have to wait for oxygen to penetrate thawed permafrost, as decomposition will start as soon as it warms up (I'm sure there already are bacteria frozen in there so there is no travel time).
So we might be watching a thawing that triggers the next ice age; one is expected soon so it is not surprising. The methane from the permafrost might increase temperatures briefly, but it only lasts 50 years in the atmosphere and then its "greater warming than carbon dioxide" behavior will be gone. (By what percent would permafrost methane increase the amount of methane in the atmosphere?)
Well, 5-15 minutes flight time would be long enough for Mall Security to make a shoplifter's escape awkward. (drone following overhead:"Thief! Thief! Thief!")
Military techs have been working with drones for a long time -- I suppose a fire-and-forget missile is also a drone. Long before that there were wire-guided missiles and ones with TV cameras in the nose. Everyone saw Desert Storm pictures of air-dropped versions, but it's also been used to fire an anti-tank missile "over a hill". The devices don't last long, of course.
I don't know how many helicopter drones they've been working with. I am aware that a division of Moller, makers of the Skycar, also offer a device with a vertically-mounted engine. Being sold for inspecting bridges, and it has obvious military use.
The previous post said "represented 3%...", indicating that the 3% was part of that total.
And now you're saying "entered the atmosphere"; do you mean "might enter the atmosphere"?
According to the Arctic Ocean circulation theory, ice ages might happen when the Arctic warms up (the Earth is colder now than it tends to be), the ice melts, the Arctic Ocean absorbs a lot more sunlight, much more water vapor (the primary greenhouse gas) is produced..and a catastrophic amount of snow falls on the continents, beginning the growth of the glaciers.
If we're 25-100 years from the start of a new ice age, it wouldn't be surprising if melting all that ice also thaws the permafrost. As the tundra is less reflective than ice, it should warm up more quickly...and only the last 10,000 years of accumulation will decompose because the level below that had decomposed just before the most recent ice age. I don't know how deep this might be...I'm not finding info on tundra soil depth. Many web sites say that land plants grow very slowly and footprints may remain visible for years, but there are also many shallow lakes. It would only take one inch per year of accumulation to produce a 1,000 foot depth over 12,000 years. But then why doesn't the soil in Kansas have over 1,000 feet of black soil? And where does each year's plant growth get its necessary minerals from -- from bedrock far below?
Hmm... I wonder to what depth oxygen could penetrate. Do anaerobic bacteria also generate methane? Ah, yes they do; of course -- that's the suspected source of geologic methane deposits. So all that's needed is warmth to produce methane from organic matter.
You're trying to compare a non-fossil fuel to combustion of fossil fuels. You need to find how much carbon dioxide is naturally released and compare to that.
It is reasonable to compare the coal fires in China to combustion of fossil fuels. But you have to check whether the "combustion of fossil fuels" includes natural fires, whether coal fires are included in the other statistic, and whether they are considered natural or artificial.
"...locally, contrails are equally as significant as greenhouse gases"
Baloney.
First of all, if the analogy holds any water at all (excuse the pun), then locally, contrails are equally as significant as a really cloudy day.
The destructive nature of greenhouse gases has been piped loud and clear regarding the CFC-Ozone reactions that allegedly occur in emitted fossil fuels in the high atmosphere. Here [ucsusa.org] is a decent description of the process.
Take a look at the link you yourself provided.
2. What have humans done to the ozone layer?
Humans have damaged the ozone layer by adding molecules containing chlorine or bromine that lead to ozone destruction...." Nothing there about fossil fuels or jets. Read a little more and you'll learn those "molecules" are gases which are released on the ground.
"CFCs are responsible for less than 10 percent of total atmospheric warming, far less than the 63 percent contribution of carbon dioxide."
Total atmospheric warming? I think water vapor contributed a bit more than carbon dioxide to the total greenhouse effect.
There have been many loud things said about greenhouse gases, but apparently not clearly enough.
Yeah, MS Passport has done a lot of damage to the Microsoft.Com pages.
When MS tried to give themselves access to my one Microsoft machine by changing the MS Media Player license, I tried to see if they had any further info in the Support section.
I couldn't get to the Support section for Media Player through a web search engine because I don't have a Passport.
I couldn't get in the appropriate area from the main Support page because the Javascript topic menu doesn't work in Netscape.
I couldn't report problems because I don't have an MS Passport.
I can't reach the Microsoft Contact pages because I don't have an MS Passport.
So I couldn't find if MS had further info about the Media Player license, I couldn't get info on how to remove Media Player, I couldn't report those problems, and I can't find a phone number to contact Microsoft.
I had to use a phone book to call a Microsoft office in a nearby large city and ask them for a Support phone number.
Gee, guess what. I can not remove MS Media Player. I can only remove the icon. So I can not just view pictures and get beeps for errors, I must keep the Media Player bloat.
Oil and methane are geologic, leaking up from the huge amounts of carbon in the Earth. That's why volcanoes often emit a lot of carbon and oil fields can refill. It's also why our helium comes from methane and oil wells...it's not harvested from the air, and as a noble gas it is not in many minerals, but it's cheap because it comes from the ground.
The oil may also be indirectly nuclear. It's not from sun-powered plants. But there may be bacteria in the rocks eating carbon floating up...and the deep heat from the Earth's radioactive decay is helping give them energy.
A better solution would be to change the "mount the root filesystem" step to wait and retry if root is not available.
The dumb way is to use a sleep() with a maximum number of tries. The smart way is to keep trying until all drivers are done initializing (and drive access times out -- it can take a while in a configuration where the mount is initiated by a boot-time audio message through the speaker and someone has to insert a disk...), or at least all drivers which are relevant, which is pretty hard to determine due to so many possibilities, particularly if networking is involved.
(You neglected to mention how many rods per fortnight per quarter)
Note that HOW the 1,000 gravities is applied is relevant.
If applied evenly across the object, it will merely accelerate very suddenly in a new direction and be undamaged.
If applied unevenly and quickly, everything will be shaken. Imagine a pulse, so the acceleration first affects only one side of the object, then all of it, then it stops affecting one side.
If applied only to one part of the object, that part may be ripped off and torque will try to spin the object.
If the acceleration is different enough between the near and far sides, tidal forces will stretch the object.
I am reminded of the beam weapons in the Honor Harrington series. The only beam technology seems to be tractor and pressor beams. But they're also being used in weapons, by making a very narrow beam which alternates quickly between tractor and pusher. So it grabs what it hits and tries to shake it loose from whatever it is part of...causing a great deal of heat at the same time.
Well, I wondered about USB over IP. It does exist now. AnywhereUSB, by IONetworks.Com, lets a host with a USB over IP device driver talk to their USB server. So you could have USB keyboards, mice, or other devices in your cubicle which are connected to a system anyplace in the world. And if you have those USB devices connected to a switch, you can switch them to several systems.
Unfortunately they only have a device driver for some versions of Microsoft Windows at the moment.
Take a look at X-10.Org and you'll find an assortment to possibilities. (The "Products" section has SmartHome.Com behind it)
The X-10 system sends signals through the house's power wiring to turn things on. In this case you could set several chimes around the house to ring when the same code is sent.
There are several options for switches to ring the chimes: Motion detector, infrared beam sensors, contact sensor, and various types of switches and handheld remotes.
Notice the "Powerflash" dry contact transmitter lets you simply connect a whatever switch you want. (Well, you can't use a 110 volt "touch" switch) At Radio Shack or a hardware or automotive store you can find several switches, such as a "microswitch" with a lever on it. Or install a magnetic switch in a piece of wood, with a magnet on a string hanging pendulum-like over the switch, so hitting the string makes the switch close.
RealWeasel and Other Issues
on
Cheap KVM Over IP?
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· Score: 4, Informative
Yes, the RealWeasel provides a serial MGA/VGA text interface. It also translates serial input to keyboard code conversion. It solves most of the problems, just needs serial-to-TCP/IP to meet the IP requirement.
Serial Console (including reset and boot BIOS access)
RealWeasel (or similar if there is one) for console in each machine. Needed on machines whose BIOS or OS does not support a serial console.
Without RealWeasel, you could use a serial-to-keyboard adapter for remote ASCII console input. Console output becomes a separate problem. (I see a Keyat unit also allows several adapters on a single RS-485 interface, so a single RS-485 link could service several servers)
Terminal server, to convert all those serial ports to TCP/IP; IP support was specified. (Linux Serial Console HOWTO above has terminal server info also)
Mouse support: Another serial port, with servers configured for serial mice. On management workstation, install a serial mouse specifically for remote use.
Make a program for your management station which lets you select a remote console. The program pops up an appropriate terminal window (unless it already is running) and connects the serial mouse to remote's serial mouse input port.
Reset/power control.
RealWeasel offers reset control.
Reset could be wired to relays, which would require relays controlled through TCP/IP (could b done through terminal server serial or parallel ports).
Web cam and robot arm. Details left as an exercise for the reader.
As IP is being used, all this can be run through Ethernet or serial PPP links. Or USB, with serial ports for console/mouse and USB-Ethernet for X11 through USB network (Is there an Ethernet-to-USB_Host device, so a USB-through-Ethernet device driver could talk to a remote USB network?)
Encryption to protect console data: Have to encrypt the terminal server's link. X11 could run through an SSH tunnel.
"There is no natural process outside living cells that generates amino acids of one chirality; everything generates nicely racemic (equally L and R) mixtures." There are several possible natural processes.
"get just one protein to form randomly" Irrelevant. The assembly didn't have to be random, and many enzymes can have the same effect. Even with random chance, an existing sequence might just have been the first to happen of many possible solutions -- or maybe a different sequence was used in the first life and was later replaced by the one used now.
"CQ Mars...CQ Mars..." "Mars is on the other side of the Sun, wait a few months" "I'm working the bounce off Saturn." "Oh. Any luck?" "Won't know until morning. Light speed delay."
Does the regulation prohibit a hole in the ground? Instead of having the dish above ground, disguise it with landscaping...build a brush-covered bowl around it. Paint the dish in green camouflage -- or light shades of gray if your part of the country gets snow. Or dig a hole and put the dish down there.
For that matter, a hole might be your dish. A metal-lined hole. For aiming between several birds, a parabolic trench or a series of holes with a feedhorn on a rail... (yes, several feedhorns is probably cheaper and better).
Somebody...probably the NSA... also painted a smiley face on a dish used to track satellites. So spy satellites could see that we were watching them.
It was a small dish, so only a spy satellite had good enough cameras to see the face. (You now can buy a satellite photo of the place and the dish itself is barely visible)
"In the past 100 years how many times have people discovered new physics laws vs discovered life on other planets?"
In the past 100 years how many times have people built houses vs built computers? Obviously there are no computers because so many houses have been built. Slashdot vanishes in a cloud of irrelevant improbabilities...
The probability of an event happening does not affect whether the event actually happens.
For that matter, we are here. The obvious choices for the existence of life here are:
Life here was created by random chemical/physical processes. Probability unknown.["Here" is this solar system, whether Mars or Earth]
Life here is an extension of existing life in this galaxy. Probability unknown, but allows much longer time frame and once it happened once it can spread.
Panspermia.
Random cause: Bacteria or DNA from other solar systems seeded our biology.
Directed cause: Life forms in other solar systems sent primitive life to other solar systems. Does not require intelligence, because a space-seeding plant is an increase in the probability of intersystem seeding.
Gardening: Intelligent life seeded our solar system.
Miracle: We just appeared here. Probability unknown. Several conflicting events recorded.
There are several possibilities for our own life forms. The possibilities of our origin give hints as to the chances of life existing elsewhere, but are not proof. We need more data.
This data about life existing on Mars suggests several modifications in theory:
Life was able to be created outside the conditions at Earth's orbit. If Mars was very different from old Earth when life formed on Mars, the probability of random life creation is increased due to a widening of the definition of a suitable environment.
Life may have been created in two places within this single solar system. This suggests that the probability of random life creation is fairly large. It is possible that life is very unlikely and the coin just happened to land on edge twice here, but the suggestion is still toward a higher probability of life.
If life was created on Mars and travelled to Earth, the probability of panspermia tends to be higher. Evidence of life which can survive space increases the probability that life can travel between solar systems (ignoring the possibility of close approaches by another solar system or rogue planets).
Some of these possibilities are mutually exclusive. If life on Earth was seeded by Mars then although the possibility of Panspermia is increased, an increase in the possibility of random life is then not suggested. We then still have only one example of the creation of life in this solar system, it merely happened on Mars instead of the previously assumed location of Earth.
A non-Mars item affecting life probabilities: Recent evidence suggests that life existed on Earth only a short time after Earth cooled. Although the probability of life being randomly created on Earth is unknown, a shorter time of appearance is a hint at a larger probability. Only a hint, as with a single event it is possible that a nearly impossible event just randomly happened here. The same situation is present if life appeared on Mars shortly after it cooled. If life appeared independently in both places shortly after it cooled, that is two hints at a larger probability.
Ignoring the fact that the probability of an event does not affect the event actually happening...
Please take a few minutes staring at the Moon and reconsider. The many huge craters on it hint at the number of impacts which hit planets...and remember the lava-covered flat 'marias' used to have visible craters too. Also consider the Moon itself as evidence of the power of impacts. The Moon was blasted loose from the Earth by an impact.
You're probably underestimating the number of collisions, the violence of the collisions, and the effect of the low Mars gravity. Also, any rocks leaving Mars would be in an orbit similar to Mars -- near the ecliptic (the plane of all the planets). Rocks with a velocity slower than Mars (whether due to the impact or repeated close encounters with Mars) would head toward the Sun, crossing Earth's orbit. Space is very empty, but having the objects in similar planes and orbits greatly increases the chances of encounter.
There also are indications here on Earth of energetic impacts. If you look at the meteorite impact site maps, you'll see there have been many dozen of these impacts (most of Earth has not been mapped for impacts). These are impacts which were so violent that they changed the magnetic pattern in rocks "at some depth".
Slashdot Mirror
"Ice encountered...No, worse -- it's Frost!"
Sounds like a free (as in beer) software should fit in there someplace.
Is Outlook more susceptible to this type of error, or was it just Outlook's bad luck that the error happened in a plugin for it?
Yes, I was referring to former topsoil. Rather than Kansas having hundreds of feet of accumulated topsoil, the Kansas Geological Survey doesn't even map it. Perhaps erosion is so powerful that it washes away topsoil faster than it can be formed -- but if that were the case it should be gone. If permafrost material accumulates faster than topsoil accumulates in faster-growing warm climates, either topsoil is removed faster in warmer climates or the removal is blocked by the arctic climate. (I used the term "permafrost material" because I suspect that the many shallow lakes contribute an amount similar to that of trundra plants).
And I agree that oxygen wouldn't penetrate thawed permafrost very deeply, which is why I was wondering if anaerobic bacteria generate methane. They do, so we don't have to wait for oxygen to penetrate thawed permafrost, as decomposition will start as soon as it warms up (I'm sure there already are bacteria frozen in there so there is no travel time).
So we might be watching a thawing that triggers the next ice age; one is expected soon so it is not surprising. The methane from the permafrost might increase temperatures briefly, but it only lasts 50 years in the atmosphere and then its "greater warming than carbon dioxide" behavior will be gone. (By what percent would permafrost methane increase the amount of methane in the atmosphere?)
Or... "Spammer! Spammer! Spammer!"
I don't know how many helicopter drones they've been working with. I am aware that a division of Moller, makers of the Skycar, also offer a device with a vertically-mounted engine. Being sold for inspecting bridges, and it has obvious military use.
And now you're saying "entered the atmosphere"; do you mean "might enter the atmosphere"?
According to the Arctic Ocean circulation theory, ice ages might happen when the Arctic warms up (the Earth is colder now than it tends to be), the ice melts, the Arctic Ocean absorbs a lot more sunlight, much more water vapor (the primary greenhouse gas) is produced..and a catastrophic amount of snow falls on the continents, beginning the growth of the glaciers.
If we're 25-100 years from the start of a new ice age, it wouldn't be surprising if melting all that ice also thaws the permafrost. As the tundra is less reflective than ice, it should warm up more quickly...and only the last 10,000 years of accumulation will decompose because the level below that had decomposed just before the most recent ice age. I don't know how deep this might be...I'm not finding info on tundra soil depth. Many web sites say that land plants grow very slowly and footprints may remain visible for years, but there are also many shallow lakes. It would only take one inch per year of accumulation to produce a 1,000 foot depth over 12,000 years. But then why doesn't the soil in Kansas have over 1,000 feet of black soil? And where does each year's plant growth get its necessary minerals from -- from bedrock far below?
Hmm... I wonder to what depth oxygen could penetrate. Do anaerobic bacteria also generate methane? Ah, yes they do; of course -- that's the suspected source of geologic methane deposits. So all that's needed is warmth to produce methane from organic matter.
You're trying to compare a non-fossil fuel to combustion of fossil fuels. You need to find how much carbon dioxide is naturally released and compare to that.
It is reasonable to compare the coal fires in China to combustion of fossil fuels. But you have to check whether the "combustion of fossil fuels" includes natural fires, whether coal fires are included in the other statistic, and whether they are considered natural or artificial.
Baloney.
First of all, if the analogy holds any water at all (excuse the pun), then locally, contrails are equally as significant as a really cloudy day.
The destructive nature of greenhouse gases has been piped loud and clear regarding the CFC-Ozone reactions that allegedly occur in emitted fossil fuels in the high atmosphere. Here [ucsusa.org] is a decent description of the process.
Take a look at the link you yourself provided.
Humans have damaged the ozone layer by adding molecules containing chlorine or bromine that lead to ozone destruction.
Nothing there about fossil fuels or jets. Read a little more and you'll learn those "molecules" are gases which are released on the ground.
No. Ozone depletion and global warming are separate problems, though some agents contribute to both."
Total atmospheric warming? I think water vapor contributed a bit more than carbon dioxide to the total greenhouse effect.
There have been many loud things said about greenhouse gases, but apparently not clearly enough.
When MS tried to give themselves access to my one Microsoft machine by changing the MS Media Player license, I tried to see if they had any further info in the Support section.
I couldn't get to the Support section for Media Player through a web search engine because I don't have a Passport.
I couldn't get in the appropriate area from the main Support page because the Javascript topic menu doesn't work in Netscape.
I couldn't report problems because I don't have an MS Passport.
I can't reach the Microsoft Contact pages because I don't have an MS Passport.
So I couldn't find if MS had further info about the Media Player license, I couldn't get info on how to remove Media Player, I couldn't report those problems, and I can't find a phone number to contact Microsoft.
I had to use a phone book to call a Microsoft office in a nearby large city and ask them for a Support phone number.
Gee, guess what. I can not remove MS Media Player. I can only remove the icon. So I can not just view pictures and get beeps for errors, I must keep the Media Player bloat.
Boy, I'm sure that .NET will be just wonderful...
The oil may also be indirectly nuclear. It's not from sun-powered plants. But there may be bacteria in the rocks eating carbon floating up...and the deep heat from the Earth's radioactive decay is helping give them energy.
The dumb way is to use a sleep() with a maximum number of tries. The smart way is to keep trying until all drivers are done initializing (and drive access times out -- it can take a while in a configuration where the mount is initiated by a boot-time audio message through the speaker and someone has to insert a disk...), or at least all drivers which are relevant, which is pretty hard to determine due to so many possibilities, particularly if networking is involved.
Note that HOW the 1,000 gravities is applied is relevant.
- If applied evenly across the object, it will merely accelerate very suddenly in a new direction and be undamaged.
- If applied unevenly and quickly, everything will be shaken. Imagine a pulse, so the acceleration first affects only one side of the object, then all of it, then it stops affecting one side.
- If applied only to one part of the object, that part may be ripped off and torque will try to spin the object.
- If the acceleration is different enough between the near and far sides, tidal forces will stretch the object.
I am reminded of the beam weapons in the Honor Harrington series. The only beam technology seems to be tractor and pressor beams. But they're also being used in weapons, by making a very narrow beam which alternates quickly between tractor and pusher. So it grabs what it hits and tries to shake it loose from whatever it is part of...causing a great deal of heat at the same time.Unfortunately they only have a device driver for some versions of Microsoft Windows at the moment.
The X-10 system sends signals through the house's power wiring to turn things on. In this case you could set several chimes around the house to ring when the same code is sent.
There are several options for switches to ring the chimes: Motion detector, infrared beam sensors, contact sensor, and various types of switches and handheld remotes.
Notice the "Powerflash" dry contact transmitter lets you simply connect a whatever switch you want. (Well, you can't use a 110 volt "touch" switch) At Radio Shack or a hardware or automotive store you can find several switches, such as a "microswitch" with a lever on it. Or install a magnetic switch in a piece of wood, with a magnet on a string hanging pendulum-like over the switch, so hitting the string makes the switch close.
Professional Audio On Linux?
Many comments, mostly about software and Macs.
There are some Linux Sound Hardware comments.
The "Linux Music and Sound" book is recommended.
The Florida Pinball Game!
Election Scoring! Bounce your supporters higher for greater scores! Change the rules! Recount! Recount! Tilt!
There are several possible natural processes.
Proteins did not have to be created for life to appear, and proteins could then have been assembled by primitive life.
Irrelevant. The assembly didn't have to be random, and many enzymes can have the same effect. Even with random chance, an existing sequence might just have been the first to happen of many possible solutions -- or maybe a different sequence was used in the first life and was later replaced by the one used now.
"CQ Mars...CQ Mars..."
"Mars is on the other side of the Sun, wait a few months"
"I'm working the bounce off Saturn."
"Oh. Any luck?"
"Won't know until morning. Light speed delay."
For that matter, a hole might be your dish. A metal-lined hole. For aiming between several birds, a parabolic trench or a series of holes with a feedhorn on a rail... (yes, several feedhorns is probably cheaper and better).
It was a small dish, so only a spy satellite had good enough cameras to see the face. (You now can buy a satellite photo of the place and the dish itself is barely visible)
There are no free roof tiles? I thought that was an AOL project, and that was why they keep giving me reflective roof tiles.
In the past 100 years how many times have people built houses vs built computers? Obviously there are no computers because so many houses have been built. Slashdot vanishes in a cloud of irrelevant improbabilities...
The probability of an event happening does not affect whether the event actually happens.
For that matter, we are here. The obvious choices for the existence of life here are:
- Life here was created by random chemical/physical processes. Probability unknown.["Here" is this solar system, whether Mars or Earth]
- Life here is an extension of existing life in this galaxy. Probability unknown, but allows much longer time frame and once it happened once it can spread.
- Panspermia.
- Random cause: Bacteria or DNA from other solar systems seeded our biology.
- Directed cause: Life forms in other solar systems sent primitive life to other solar systems. Does not require intelligence, because a space-seeding plant is an increase in the probability of intersystem seeding.
- Gardening: Intelligent life seeded our solar system.
- Miracle: We just appeared here. Probability unknown. Several conflicting events recorded.
There are several possibilities for our own life forms. The possibilities of our origin give hints as to the chances of life existing elsewhere, but are not proof. We need more data.This data about life existing on Mars suggests several modifications in theory:
- Life was able to be created outside the conditions at Earth's orbit. If Mars was very different from old Earth when life formed on Mars, the probability of random life creation is increased due to a widening of the definition of a suitable environment.
- Life may have been created in two places within this single solar system. This suggests that the probability of random life creation is fairly large. It is possible that life is very unlikely and the coin just happened to land on edge twice here, but the suggestion is still toward a higher probability of life.
- If life was created on Mars and travelled to Earth, the probability of panspermia tends to be higher. Evidence of life which can survive space increases the probability that life can travel between solar systems (ignoring the possibility of close approaches by another solar system or rogue planets).
Some of these possibilities are mutually exclusive. If life on Earth was seeded by Mars then although the possibility of Panspermia is increased, an increase in the possibility of random life is then not suggested. We then still have only one example of the creation of life in this solar system, it merely happened on Mars instead of the previously assumed location of Earth.A non-Mars item affecting life probabilities: Recent evidence suggests that life existed on Earth only a short time after Earth cooled. Although the probability of life being randomly created on Earth is unknown, a shorter time of appearance is a hint at a larger probability. Only a hint, as with a single event it is possible that a nearly impossible event just randomly happened here. The same situation is present if life appeared on Mars shortly after it cooled. If life appeared independently in both places shortly after it cooled, that is two hints at a larger probability.
Please take a few minutes staring at the Moon and reconsider. The many huge craters on it hint at the number of impacts which hit planets...and remember the lava-covered flat 'marias' used to have visible craters too. Also consider the Moon itself as evidence of the power of impacts. The Moon was blasted loose from the Earth by an impact.
You're probably underestimating the number of collisions, the violence of the collisions, and the effect of the low Mars gravity. Also, any rocks leaving Mars would be in an orbit similar to Mars -- near the ecliptic (the plane of all the planets). Rocks with a velocity slower than Mars (whether due to the impact or repeated close encounters with Mars) would head toward the Sun, crossing Earth's orbit. Space is very empty, but having the objects in similar planes and orbits greatly increases the chances of encounter.
There also are indications here on Earth of energetic impacts. If you look at the meteorite impact site maps, you'll see there have been many dozen of these impacts (most of Earth has not been mapped for impacts). These are impacts which were so violent that they changed the magnetic pattern in rocks "at some depth".