We don't have coal and oil near the surface anymore let alone ore's ect ect. Which means we would use forest's for power and then be stuck when they run out. We could use man and beasts for power but it's hard to make a lot of things with out a lot of heat and some strong tools. So mabe crop's but are you going to make corn for food or something to burn?
I think we could do it but it would be a lot harder the 2nd time around. We might have better math and grains which would help out more than you might think. But, crude oil is not going to be bubbleing up ready for the taking the second time around.
I see little point to upgrading the CPU on a mother bord. Then again if you were plaining on buying a CPU for a grand then you may just be the kind of person who buy's a new CPU every 6 months but in that case ya may as well buy a new mobo becouse the difrence in the top end CPU on an old mobo and the 2nd cpu is normaly enof to buy a new mainbord which tends to give you better overall preformance for the price.
IMO it's best to buy CPU, mainbord, and RAM then in a double the ram year 1 or 2.
They had 3 sets of backup generators they ALL failed.
The question is was it from incompatice or malace?
Considering it's a goverment project I would asume both were involved but that's just me.
If I could find a bank that would send you that many pennies for 500$ over the cost of the pennies I would consider that a sucsess.
But, in that case your not selling something your providing a service. Selling something at a profit of say 1cent per item yealds 10grand for a million items. Not bad for 2 months worth of work. Though it's not exactly weath.
I agree with you that his point was not properly considerd though. Then again he may or may not have been considering that a lifetime goal.
Hmm, maybe Slashdot shoud sell it's services to companies as a legal tool to remove a site from the internet.
1. Create Slashdot 2. Sell licenses to large faceless companies for millions of dollars. 3. ??? 4. Profit!!
What do you need a ??? in there for you just sold ___ for millions of dollars that's it you don't need to do anything else to make a Profit.
The real reason for the.com bust people not noticing when are making a Profit.
Sorry on second thought I think you do get it. Your just never said useing a fairly large hash would get rid of the problems for a reasonably sized table. And useing a sorted list of hases it would not be computationaly expencive to check though a sorted hash table. keep a list of hash 4k hash files and the start and end value to that file and your down to basicly the time it takes to move the HDD read head to a sector and read a value before you can upload the file.
So ok yea you could do it but it would still not work becose you can't force people to use an identical hash for any given sorce file of the type where lossy compression is acseptable.
You realy don't get it say your hash is 1024 bits. thus it has 2^1024 posible combinations.
But your blocking 50,000,000 files. (with 50 GB hash table) well there is a 1 in 2^1024 chance that your first 2 files have the same hash but with 3 files it's (1 - ( 1 / ( 2 ^ 1024) ) )* (1 - ( 1 / ( 2 ^ 1024 ) ) )
with 4 files it's
(1 - ( 1 / ( 2 ^ 1024) ) )* (1 - ( 1 / ( 2 ^ 1024 ) ) ) * (1 - ( 3 / ( 2 ^ 1024) ) )...
aka multiplicative sum of :
1 - ( N / ( 2 ^ 1024 ) )
with N form 1 to 50,000,000 which is not 0.
and it's even worse when you think of compareing the next set of 50,000,000 files to hash database (math is simpler though) (1 - (50,000,000 / ( 2 ^ 1025 ) ^ 50,000,000 ok ok yea that's a vary small number but it's still not 0.
While I will leave you to the math on that one in a 32 bit scheam you have a 4.55% of having 2 or more identical hases when storing 20,000 files or a 9% chance any of 20,000 random files uploaded have the same hash as the 20,000 hases your compareing them 2.
with 50,000,000 files in a database and 50,000,000 new files to upload you end up with only a one in 2.5 * ( 10 ^ 15) / (2 ^ 128) or 1 in 10^24 chance of a problem. which IMO would work just fine. But your still talking about takeing a hash of the whole file and compareing it to a database of 6.4 gigs of hashes. Which as you might guess would be vary quick... umm yea.
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We don't have coal and oil near the surface anymore let alone ore's ect ect. Which means we would use forest's for power and then be stuck when they run out. We could use man and beasts for power but it's hard to make a lot of things with out a lot of heat and some strong tools. So mabe crop's but are you going to make corn for food or something to burn? I think we could do it but it would be a lot harder the 2nd time around. We might have better math and grains which would help out more than you might think. But, crude oil is not going to be bubbleing up ready for the taking the second time around.
I see little point to upgrading the CPU on a mother bord. Then again if you were plaining on buying a CPU for a grand then you may just be the kind of person who buy's a new CPU every 6 months but in that case ya may as well buy a new mobo becouse the difrence in the top end CPU on an old mobo and the 2nd cpu is normaly enof to buy a new mainbord which tends to give you better overall preformance for the price.
IMO it's best to buy CPU, mainbord, and RAM then in a double the ram year 1 or 2.
Repeat as needed.
They had 3 sets of backup generators they ALL failed. The question is was it from incompatice or malace? Considering it's a goverment project I would asume both were involved but that's just me.
1,000,000 / 100 - 9,000
10000.00-9000 = 1,000$
If I could find a bank that would send you that many pennies for 500$ over the cost of the pennies I would consider that a sucsess.
But, in that case your not selling something your providing a service. Selling something at a profit of say 1cent per item yealds 10grand for a million items. Not bad for 2 months worth of work. Though it's not exactly weath.
I agree with you that his point was not properly considerd though. Then again he may or may not have been considering that a lifetime goal.
Hmm, maybe Slashdot shoud sell it's services to companies as a legal tool to remove a site from the internet. 1. Create Slashdot 2. Sell licenses to large faceless companies for millions of dollars. 3. ??? 4. Profit!! .com bust people not noticing when are making a Profit.
What do you need a ??? in there for you just sold ___ for millions of dollars that's it you don't need to do anything else to make a Profit. The real reason for the
Sorry on second thought I think you do get it. Your just never said useing a fairly large hash would get rid of the problems for a reasonably sized table. And useing a sorted list of hases it would not be computationaly expencive to check though a sorted hash table. keep a list of hash 4k hash files and the start and end value to that file and your down to basicly the time it takes to move the HDD read head to a sector and read a value before you can upload the file. So ok yea you could do it but it would still not work becose you can't force people to use an identical hash for any given sorce file of the type where lossy compression is acseptable.
You realy don't get it say your hash is 1024 bits. thus it has 2^1024 posible combinations. But your blocking 50,000,000 files. (with 50 GB hash table) well there is a 1 in 2^1024 chance that your first 2 files have the same hash but with 3 files it's (1 - ( 1 / ( 2 ^ 1024) ) )* (1 - ( 1 / ( 2 ^ 1024 ) ) ) with 4 files it's (1 - ( 1 / ( 2 ^ 1024) ) )* (1 - ( 1 / ( 2 ^ 1024 ) ) ) * (1 - ( 3 / ( 2 ^ 1024) ) ) ...
aka multiplicative sum of :
1 - ( N / ( 2 ^ 1024 ) )
with N form 1 to 50,000,000 which is not 0.
and it's even worse when you think of compareing the next set of 50,000,000 files to hash database (math is simpler though) (1 - (50,000,000 / ( 2 ^ 1025 ) ^ 50,000,000 ok ok yea that's a vary small number but it's still not 0.
While I will leave you to the math on that one in a 32 bit scheam you have a 4.55% of having 2 or more identical hases when storing 20,000 files or a 9% chance any of 20,000 random files uploaded have the same hash as the 20,000 hases your compareing them 2.
with 50,000,000 files in a database and 50,000,000 new files to upload you end up with only a one in 2.5 * ( 10 ^ 15) / (2 ^ 128) or 1 in 10^24 chance of a problem. which IMO would work just fine. But your still talking about takeing a hash of the whole file and compareing it to a database of 6.4 gigs of hashes. Which as you might guess would be vary quick... umm yea.