Real infinite compression

0.Forget pigeonhole principle. Acquire pigeons.
1.Gather 256 different hashing algorithms with low collision rates.
2.hash 256 hashes of a file. save this+length to a file.
3.To decompress,generate all files of this size(with quantum computing it should be easier, imho) and check their 256 hashes.
4.if all hashes match, you got the original.
5.Since the chance of all 256 different algorithms having a collision is close to zero, the file must be the original.
6.Infinite pigeons. http://www.youtube.com/watch?v=n84sZIN4lv8

>>4
A negative chance does not exist: chance is from 0(zero chance) to 1(certain occurrence). You're probably thinking about http://en.wikipedia.org/wiki/Negative_probability  which doesn't apply here. Collision chance is in 0<>1 interval.