A couple of urls, in case you find this field interesting:<p><a href="http://en.wikipedia.org/wiki/Kolmogorov_complexity" rel="nofollow">http://en.wikipedia.org/wiki/Kolmogorov_complexity</a><p><a href="http://en.wikipedia.org/wiki/Minimum_description_length" rel="nofollow">http://en.wikipedia.org/wiki/Minimum_description_length</a>
This reminded me of reading Prof. Chaitin's work in college library. The discovery Prof. Chaitin made is thought-provoking, by following Godel's quest to mathematical foundation.