Projects
Engineering
Plant 1
Widget Machine A
Widget Machine B
Plant 2
Capital Projects
New Widget Capper Line
Downloads
Applications
Documents
Misc
and so on
Now my system is like this Widget Machine A Plant 1 Widget Machine B Plant 1 New Widget Capper Line Plant 2 Downloaded Applications Downloaded Documents Downloaded Misc
and so on
in the above examples each line is a directory/folder.
So I may not remeber if the 'Widget Machine A' was filed under 'Plant 1 Widget Machine A' or 'Widget Machine A Plant 1' but I only have two locations to look to find out. Whereas if I buried the folder in a heiarchy I might have a dozen possible locations to look through.
I used to try to store everything in deep heiarchies with complex organizations, both electronic and paper files. After reading David Cole's 'Getting Things Done' I reorganized everything into a very flat structure. Everything goes into a folder with a descriptive title at the root level. This works suprisingly well, again in both the PC and the real world. I end up with lots of folders many of which have only 1 file or paper in them. But stuff is so easy to find. When finding a file/document I can usually go strait to t it. Even if I can't, I rarely have to look in more than two folders.
Maintaining a complex heiarchy requires the user to keep a mental map of the heiarchy in mind to find stuff. Using a very flat system only requires the user to be able to use the alphabet. Using my complex heiarchy system used to make me feel organized and smart. Now my system is quite dumb but it works so much better.
Suppose a database of widget info...cost, model, storage location, color, etc.
A pivot table:
A rectangular table with rows and columns
Along the top you some pick attribute(s) of the widget
Along the left side you pick other attribute(s) of the widget
You pick what goes into the interior of the table and how it is summurized
So you could compare color(along top) with location(along left side) and choose to see the sum of the inventory levels in the interior.
or...
SELECT color, location, SUM(inventory) FROM table GROUP BY color, location
But in matrix form so that you end you with one cell for each color+location instead of one record. So the size of the matrix grows approximately by a power of 0.5 with respect to the number of results.
Database output: location |color | inventory warehouse A| red | 100 warehouse A| blue | 123 warehouse B| red | 0 warehouse B| blue | 50
Pivot Table ------------red blue warehouse A 100 123 warehouse B 0 50
2) Who ought define what constitutes "benefit for the public"? Me and a circle of friends? A Congressional committee? You and a circle of *your* friends?
Its a judgement call by the commission and I doubt that they ever get it perfect. But whether the commission will lean towards the conservative or liberal side of the fence will likely depend on things like voters.
...how are radio people supposed to jnow[sic] what's indecent.
Like most things there is a clear right and a clear wrong with some gray area in between. In this case trying to argue that the Howard Stern show was in the grey area between decency/indecency requires a complete departure from common sense. The standards of decency are clearly defined. Entertainers that encroach the grey area do so knowingly feeling that the risk of a fine is worth the benefit of pushing the evelope.
The FCC is not trying to shut down indecent entertainers. They are trying to allocate the public resource of electro-magnetic spectrum to those services that provide some benefit to the public. There are plenty of non-public-resurce-consuming methods of distribution/broadcasting that these entertainers can choose.
How about a '+1 Resonable/Objective' mod option for politics.slashdot.org. There are many great arguments expressed in these political threads that deserve to be set apart from the equally fantastic rants.
My state recently got a lottery for the first time in the history of the state. Now millions of Tennesseeans have poured half a billon dollars into the lottery system. Every eligible high school student was able to recieve a college scholarship. The manager of the lottery is paid $350,000 with another $400,000 in bonuses available.
So millions of people voluntarily pooled a little of their spare money together to provide a great benefit to the citizens of the state. (This is not an endorsement of the lottery. I am morally opposed to it and do not participate in it. I'm just using it as an example)
Another example of people voluntarily giving or time or money is churches. The Southern Baptist Convention has a budget of hundreds of millions of dollars. I'm sure the Roman Catholic Church has a budget to dwarf that. People voluntarily gave this money.
Why doubt the power of FOSS when examples of people volunarily giving of their spare time/money and accomplishing great things is all around. Not everyone in the world demands monetary reimbursement for every beneficial act they perform. That's quite a sad outlook on life don't you think?
I think the NASA way would be to use an identical environment for testing purposes. To test the ability of the Saturn V and Shuttle to withstand the stresses of flight do you think they relied on simulation and model testing? No, they build the largest structure in the state of Alabama (at the time) to shake the heck out of full sized space craft.
See http://www.cr.nps.gov/nr/travel/aviation/sat.htm
The GTD method is really common sense. But it takes alot of common sense ideas and builds a system that is comprehensive.
It is a lot like Dave Ramsey's financial advice. There is nothing magical or complex about it yet it has helped thousands of people live a better life.
GTD is an excellent book. I wish I had read it right out of high school so that I could have used the GTD method at college. <p> After reading the book and implementing the GTD method I feel much more in control. I now feel sorry for the people I see at work not using the GTD method. Its like a conversion experience that needs to be shared. <p> I have used the method about 4 months now. I wonder how this method works long term. Anyone been using David's methods for years?
What type of To Do tool you use depends on what type of To Dos you do. I recently read David Allens book Getting Things Done. I wish I had read it years ago. I usually hate this type of self-improvement book but this book is great. Its not about creating a complex organization system but rather about using very simple, effective mechanism to catch and direct everything one is faced with.
David uses a plain PalmOS organizer and PalmDesktop with no add-ins.
I suffered to some extent from the same problem that you described. Then I started seeking other people that made me feel dumb or small. In light of thier accomplishments I gained a new motivation to do better in school, work, family, and life in general. This is a continuos process.
As a mechanical engineering student I checked out the home pages of MIT students. As a father of three sons I looked to other fathers in my church that sucessfully raised sons. As a working engineer I look beyond the engineers around me and read about the work of the leaders in my field.
I thought I was the shizzle because of my l337 Excel and Word skills until I started reading about Knuth and Tufte. I thought I was a cool coder because of my Access and VBA skills until I read about PHP/MySQL. I thought I was L337 for using MySQL until I read about ProstgreSQL. Even though I was considerably more skilled than my peers in all of these area I could always find nre peers that I could learn from.
In short, if you feel so much brighter than your surroundings find new surroundings, that make you feel dim.
As an aside: when you enter the real world you will meet a co-worker that is not bright at all. This person will not enjoy an intelectual challenge and will work around any complex problems with simple but effective solutions that you would never have comprimised to. Yet he will enjoy a good deal of success. This person will have the respect from your bosses that you desire. You can learn a lot from this person.
I was leaving my apartment complex when I noticed a lady standing by a car with a flat. I'm a bit of a hick and I always carray my tool set with me in the back of my pickup. So I stop to offer help and she explains that her boyfriend went to get his bigger wrench because the one supplied with the car wasn't getting the nuts off. The goober was trying to loosen the nut with the wheel spinning freely off the ground. Without saying anything I lower the jack so that the tire is on the ground, take the wrench, loosen the lug nuts, jack the car back up and remove the wheel. Just then the boyfriend pulls up so I get in my truck leave to save him great embarassment.
This technology is way behind. A German company has devloped a keg that cools beer with no cord. I actually saw this keg and drank its beer at Pack Expo 2003. The beer was real cold and the outside of the keg was warm. It works by evaporative cooling using a double-walled shell, a controlled vacuum, and a special moisture holding material. The keg could be regenerated and used over and over. It is quite an ingenious system. The company rep said that they had no sucesses in marketing the keg in the US. But this might very well be worth the cost of airfare to Germany.
The Zire 71 has a nice 320 x 320 color display and long battery life. It only has 16MB of built in memory but has a SD memory card expansion slot. The Zire 71 also has a built in camera that is much more handy than you might think. It will also play audio books, MP3s and video. You can find these for < $200 now. I think this is one of the highest value PDAs on the market.
Density of saturated vapor ammonia at 14.7 psia is 0.0555 lb/ft^3[IIAR Ammonia Data Book]
Density of air at standard conditions 0.074 lb/ft^3 [Wikipedia]
And these numbers are conservative since ammonia will quickly absorb heat (sat temp is -28F), become supreheated, and expand. And water is rarely dry. Sometimes ammonia does not rise immediately because it condenses and freezes the moisture in the air creating a dense white cloud of ice, air, and ammonia vapor.
You are correct in that ammonia is hygroscopic (water loving). It will cause tissue damage via chemical or temperature burns due to its alkalinity and typical low temperatures. It is attracted to water but it does not react violently with it. In fact a common practice in ammonia refrigeration is to vent ammonia into a barrel of water when evacuating an oil serparator for instance.
Ammonia's hrgroscopic nature 'attracts' it to moist areas such as armpits, crotches, eyeballs, and mucous membranes. It is vitally important to irrigate exposed skin with water ASAP after exposure.
An interesting aside is that the Salt Lake City Winter Olympic bob sled/luge is a direct ammonia system. NH3 flows throughout the track. Interestingly the track was designed and installed with complete disreguard for good safety practices and mandatory OSHA/EPA safety programs. There was no way to install the needed safeguards before the games. So, during the Olympic events there were literally dozens of people standing guard with wrenches to manually shutdown parts of the system in the event of an accident. Others were guarding critically exposed piping that any vandal could have compromised.
What you tell the technicians is how to protect themselves. You tell them what protective equipment is required for each job that releases ammonia. You train them in the proper procedures required to work on an ammonia system. Then you verify that they understand what you told them, you audit to make sure they follow the procedures and wear the PPE, you ask them if they want more training, you involve them in the certification/modifications of the procedures and you repeat this constantly. You provide them with ammonia level monitoring equipment and train them in how to use it. You provide them with data on the health effects of ammonia, including the fact that there are no cummulative effects of ammonia exposure below the PEL(50ppm by OSHA, 20ppm NIOSH). You provide them with full access to and participation in your program for maintaining a safe ammonia system.
All of this is not just a good idea, its the law. Non-compliance is costly.
If this technology can be scaled to an industrial size and meet current system efficiencys it could revolutionize industrial refrigeration. Currently all large ammonia systems (>10,000 lbs) are required to meet OSHA Process Safety Management standards and EPA Risk Management Planning requirements. These are very resource intense programs and they are ongoing. An inert gas replacement could be adopted quickly.
There is a large difference in scale in these thermoacoustic coolers and an industrial refrigeration system. A typical ice cream cooler may be 600 Watts, and thats compressor plus condensor fan. Thats 0.8HP. A typical industrial ammonia refrigeration compressor will be 200 to 800 HP and the typical engine room will have from 4 to scores of these compressors. Suppose a 5000 HP system, thats smallish for a freezing operation. Thats over six thousand times larger than an retail icecream cooler. Clearly there is some engineering to be done before we can buy thermoacoustically frozen B & J ice cream.
Perhaps we now know what to do with that massive speaker McFry used at the beggining of Back to the Future.
Nucience exposures are not fatal. Most are not harmful. <p> With ammonia you get a chance to run. With HFCs and CFCs you can't smell them. One breath in an air displaced environment (remember all HFCs and CFCs are heavier than air) and you hit the floor.
...Consider they evacuate large areas when a tanker car of Anhydrous derails it does need to be used with care.
But once the ammonia dissaptes into the atmosphere there is no lasting, negative effect. This cannot be said of HFCs and CFCs. Heck, this probably can't be said for most of the chemicals under your sink or in your auto. Farmers plow thousands of pounds of ammonia into the ground every year. Thats what I meant about environmentally safe.
With respect to the rail car, with ammonia you will think you are going to die from the pungent odor long before you suffer any ill health effects. i.e. ammonia causes lawsuits long before it causes any health problems. OSHA's Permissible Exposure Level is 50ppm. That means the average Joe could work 8 hours/day 40 hours/week for a lifetime with no ill health effects at 50ppm. To give you some referece, chopping a strong smelling onion is similar to exposure to about 10-15ppm of ammonia.
With respect to your serin gas analogy, consider water. Water is also fatal in certain quantities but I am certain that it is still environmentally safe.
This technology may be great for retail coolers and the like but virtually all ice cream plants already use an environmentally safe refrigerant. Anhydrous ammonia is the refrigerant of choice for industrial applications.
It causes no ozone depletion
It does not contribute to global warming
It has heat transfer characteristics 1.6 to 4 times that of HFCs and CFCs
It requires 1.22 HP per ton of refrigeration (versus 1.27 for R134a and 1.25 for R22 this can be important when you have 10,000 HP engine rooms)
It cost $0.25/lb (versus $3.40 to $25.00 for HFCs and CFCs) Important when you have hundreds of thousands of pounds of charge.
It is lighter than air (unlike HFCs and CFCs) so releases typically float away
It has a narrow window of explosive concentration that is difficult to achive LEL:16% UEL:25%(its is hard to make it go boom)
It is a naturally occuring chemical. Your body make ammonia.
Its pungent odor is 'self-alarming'. You will leave an atmosphere of ammonia long before concentration levels reach dangerous limits.
The reason you don't have ammonia in your car and home is that exposure to the chemical in concentrations above 300ppm poses health risk. 30 minutes of exposure above 1720ppm can cause death and 5,000ppm is rapidly fatal. It should never be used in a run-to-failure, zero maintenance system like your kitchen fridge or AC unit.
...the bible really is full of contradictions, not the least between the old and the new testament, but even within the old testament there are many instances where if you try and examine them on a logical level, just do not work. Adam and Eve is one example, their kids is another.
What is contradictory about Adam and Eve? Please cite some of these contradictions you speak of. What are the contradictions between the OT and NT? Please cite some of these. What is it that you try to examine on a logical level? How do they not work?
I think you missed the point of this thread's parent.
...I do reserve the right to question a religious system which dominates the western world and much of africa with outmoded ideas...
Keep in mind that these outmoded ideas have been held sacred by millions of humans (including great thinkers and scientist) for thousands of years.
Slashdot Mirror
Well I used to have things organized like:
Projects
Engineering
Plant 1
Widget Machine A
Widget Machine B
Plant 2
Capital Projects
New Widget Capper Line
Downloads
Applications
Documents
Misc
and so on
Now my system is like this
Widget Machine A Plant 1
Widget Machine B Plant 1
New Widget Capper Line Plant 2
Downloaded Applications
Downloaded Documents
Downloaded Misc
and so on
in the above examples each line is a directory/folder.
So I may not remeber if the 'Widget Machine A' was filed under 'Plant 1 Widget Machine A' or 'Widget Machine A Plant 1' but I only have two locations to look to find out. Whereas if I buried the folder in a heiarchy I might have a dozen possible locations to look through.
I used to try to store everything in deep heiarchies with complex organizations, both electronic and paper files. After reading David Cole's 'Getting Things Done' I reorganized everything into a very flat structure. Everything goes into a folder with a descriptive title at the root level. This works suprisingly well, again in both the PC and the real world. I end up with lots of folders many of which have only 1 file or paper in them. But stuff is so easy to find. When finding a file/document I can usually go strait to t it. Even if I can't, I rarely have to look in more than two folders.
Maintaining a complex heiarchy requires the user to keep a mental map of the heiarchy in mind to find stuff. Using a very flat system only requires the user to be able to use the alphabet. Using my complex heiarchy system used to make me feel organized and smart. Now my system is quite dumb but it works so much better.
A pivot table:
- A rectangular table with rows and columns
- Along the top you some pick attribute(s) of the widget
- Along the left side you pick other attribute(s) of the widget
- You pick what goes into the interior of the table and how it is summurized
So you could compare color(along top) with location(along left side) and choose to see the sum of the inventory levels in the interior.or...
But in matrix form so that you end you with one cell for each color+location instead of one record. So the size of the matrix grows approximately by a power of 0.5 with respect to the number of results.
2) Who ought define what constitutes "benefit for the public"? Me and a circle of friends? A Congressional committee? You and a circle of *your* friends?
Its a judgement call by the commission and I doubt that they ever get it perfect. But whether the commission will lean towards the conservative or liberal side of the fence will likely depend on things like voters.
http://www.fcc.gov/cgb/consumerfacts/obscene.html
http://www.fcc.gov/eb/Orders/2001/fcc01090.html
...how are radio people supposed to jnow[sic] what's indecent.
Like most things there is a clear right and a clear wrong with some gray area in between. In this case trying to argue that the Howard Stern show was in the grey area between decency/indecency requires a complete departure from common sense. The standards of decency are clearly defined. Entertainers that encroach the grey area do so knowingly feeling that the risk of a fine is worth the benefit of pushing the evelope.
The FCC is not trying to shut down indecent entertainers. They are trying to allocate the public resource of electro-magnetic spectrum to those services that provide some benefit to the public. There are plenty of non-public-resurce-consuming methods of distribution/broadcasting that these entertainers can choose.
How about a '+1 Resonable/Objective' mod option for politics.slashdot.org. There are many great arguments expressed in these political threads that deserve to be set apart from the equally fantastic rants.
My state recently got a lottery for the first time in the history of the state. Now millions of Tennesseeans have poured half a billon dollars into the lottery system. Every eligible high school student was able to recieve a college scholarship. The manager of the lottery is paid $350,000 with another $400,000 in bonuses available.
So millions of people voluntarily pooled a little of their spare money together to provide a great benefit to the citizens of the state. (This is not an endorsement of the lottery. I am morally opposed to it and do not participate in it. I'm just using it as an example) Another example of people voluntarily giving or time or money is churches. The Southern Baptist Convention has a budget of hundreds of millions of dollars. I'm sure the Roman Catholic Church has a budget to dwarf that. People voluntarily gave this money.
Why doubt the power of FOSS when examples of people volunarily giving of their spare time/money and accomplishing great things is all around. Not everyone in the world demands monetary reimbursement for every beneficial act they perform. That's quite a sad outlook on life don't you think?
I think the NASA way would be to use an identical environment for testing purposes. To test the ability of the Saturn V and Shuttle to withstand the stresses of flight do you think they relied on simulation and model testing? No, they build the largest structure in the state of Alabama (at the time) to shake the heck out of full sized space craft.
See http://www.cr.nps.gov/nr/travel/aviation/sat.htm
No I don't use ebay. This was an attempt at humor. As a degreeded engineer I should have known better than to attempt being funny.
David uses plain PalmOS, not some fancy GTD software:
The GTD method is really common sense. But it takes alot of common sense ideas and builds a system that is comprehensive.
It is a lot like Dave Ramsey's financial advice. There is nothing magical or complex about it yet it has helped thousands of people live a better life.
GTD is an excellent book. I wish I had read it right out of high school so that I could have used the GTD method at college.
<p>
After reading the book and implementing the GTD method I feel much more in control. I now feel sorry for the people I see at work not using the GTD method. Its like a conversion experience that needs to be shared.
<p>
I have used the method about 4 months now. I wonder how this method works long term. Anyone been using David's methods for years?
David uses a plain PalmOS organizer and PalmDesktop with no add-ins.
As a mechanical engineering student I checked out the home pages of MIT students. As a father of three sons I looked to other fathers in my church that sucessfully raised sons. As a working engineer I look beyond the engineers around me and read about the work of the leaders in my field.
I thought I was the shizzle because of my l337 Excel and Word skills until I started reading about Knuth and Tufte. I thought I was a cool coder because of my Access and VBA skills until I read about PHP/MySQL. I thought I was L337 for using MySQL until I read about ProstgreSQL. Even though I was considerably more skilled than my peers in all of these area I could always find nre peers that I could learn from.
In short, if you feel so much brighter than your surroundings find new surroundings, that make you feel dim.
As an aside: when you enter the real world you will meet a co-worker that is not bright at all. This person will not enjoy an intelectual challenge and will work around any complex problems with simple but effective solutions that you would never have comprimised to. Yet he will enjoy a good deal of success. This person will have the respect from your bosses that you desire. You can learn a lot from this person.
I was leaving my apartment complex when I noticed a lady standing by a car with a flat. I'm a bit of a hick and I always carray my tool set with me in the back of my pickup. So I stop to offer help and she explains that her boyfriend went to get his bigger wrench because the one supplied with the car wasn't getting the nuts off. The goober was trying to loosen the nut with the wheel spinning freely off the ground. Without saying anything I lower the jack so that the tire is on the ground, take the wrench, loosen the lug nuts, jack the car back up and remove the wheel. Just then the boyfriend pulls up so I get in my truck leave to save him great embarassment.
This technology is way behind. A German company has devloped a keg that cools beer with no cord. I actually saw this keg and drank its beer at Pack Expo 2003. The beer was real cold and the outside of the keg was warm. It works by evaporative cooling using a double-walled shell, a controlled vacuum, and a special moisture holding material. The keg could be regenerated and used over and over. It is quite an ingenious system. The company rep said that they had no sucesses in marketing the keg in the US. But this might very well be worth the cost of airfare to Germany.
The Zire 71 has a nice 320 x 320 color display and long battery life. It only has 16MB of built in memory but has a SD memory card expansion slot. The Zire 71 also has a built in camera that is much more handy than you might think. It will also play audio books, MP3s and video. You can find these for < $200 now. I think this is one of the highest value PDAs on the market.
Density of air at standard conditions 0.074 lb/ft^3 [Wikipedia]
And these numbers are conservative since ammonia will quickly absorb heat (sat temp is -28F), become supreheated, and expand. And water is rarely dry. Sometimes ammonia does not rise immediately because it condenses and freezes the moisture in the air creating a dense white cloud of ice, air, and ammonia vapor.
You are correct in that ammonia is hygroscopic (water loving). It will cause tissue damage via chemical or temperature burns due to its alkalinity and typical low temperatures. It is attracted to water but it does not react violently with it. In fact a common practice in ammonia refrigeration is to vent ammonia into a barrel of water when evacuating an oil serparator for instance.
Ammonia's hrgroscopic nature 'attracts' it to moist areas such as armpits, crotches, eyeballs, and mucous membranes. It is vitally important to irrigate exposed skin with water ASAP after exposure.
An interesting aside is that the Salt Lake City Winter Olympic bob sled/luge is a direct ammonia system. NH3 flows throughout the track. Interestingly the track was designed and installed with complete disreguard for good safety practices and mandatory OSHA/EPA safety programs. There was no way to install the needed safeguards before the games. So, during the Olympic events there were literally dozens of people standing guard with wrenches to manually shutdown parts of the system in the event of an accident. Others were guarding critically exposed piping that any vandal could have compromised.
What you tell the technicians is how to protect themselves. You tell them what protective equipment is required for each job that releases ammonia. You train them in the proper procedures required to work on an ammonia system. Then you verify that they understand what you told them, you audit to make sure they follow the procedures and wear the PPE, you ask them if they want more training, you involve them in the certification/modifications of the procedures and you repeat this constantly. You provide them with ammonia level monitoring equipment and train them in how to use it. You provide them with data on the health effects of ammonia, including the fact that there are no cummulative effects of ammonia exposure below the PEL(50ppm by OSHA, 20ppm NIOSH). You provide them with full access to and participation in your program for maintaining a safe ammonia system.
All of this is not just a good idea, its the law. Non-compliance is costly.
If this technology can be scaled to an industrial size and meet current system efficiencys it could revolutionize industrial refrigeration. Currently all large ammonia systems (>10,000 lbs) are required to meet OSHA Process Safety Management standards and EPA Risk Management Planning requirements. These are very resource intense programs and they are ongoing. An inert gas replacement could be adopted quickly.
There is a large difference in scale in these thermoacoustic coolers and an industrial refrigeration system. A typical ice cream cooler may be 600 Watts, and thats compressor plus condensor fan. Thats 0.8HP. A typical industrial ammonia refrigeration compressor will be 200 to 800 HP and the typical engine room will have from 4 to scores of these compressors. Suppose a 5000 HP system, thats smallish for a freezing operation. Thats over six thousand times larger than an retail icecream cooler. Clearly there is some engineering to be done before we can buy thermoacoustically frozen B & J ice cream.
Perhaps we now know what to do with that massive speaker McFry used at the beggining of Back to the Future.
Nucience exposures are not fatal. Most are not harmful.
<p>
With ammonia you get a chance to run. With HFCs and CFCs you can't smell them. One breath in an air displaced environment (remember all HFCs and CFCs are heavier than air) and you hit the floor.
But once the ammonia dissaptes into the atmosphere there is no lasting, negative effect. This cannot be said of HFCs and CFCs. Heck, this probably can't be said for most of the chemicals under your sink or in your auto. Farmers plow thousands of pounds of ammonia into the ground every year. Thats what I meant about environmentally safe.
With respect to the rail car, with ammonia you will think you are going to die from the pungent odor long before you suffer any ill health effects. i.e. ammonia causes lawsuits long before it causes any health problems. OSHA's Permissible Exposure Level is 50ppm. That means the average Joe could work 8 hours/day 40 hours/week for a lifetime with no ill health effects at 50ppm. To give you some referece, chopping a strong smelling onion is similar to exposure to about 10-15ppm of ammonia.
With respect to your serin gas analogy, consider water. Water is also fatal in certain quantities but I am certain that it is still environmentally safe.
The reason you don't have ammonia in your car and home is that exposure to the chemical in concentrations above 300ppm poses health risk. 30 minutes of exposure above 1720ppm can cause death and 5,000ppm is rapidly fatal. It should never be used in a run-to-failure, zero maintenance system like your kitchen fridge or AC unit.
What is contradictory about Adam and Eve? Please cite some of these contradictions you speak of. What are the contradictions between the OT and NT? Please cite some of these. What is it that you try to examine on a logical level? How do they not work?
I think you missed the point of this thread's parent.
Keep in mind that these outmoded ideas have been held sacred by millions of humans (including great thinkers and scientist) for thousands of years.