I've been tagged (by Matt) with the fifth sentence meme. (quite some time ago apparently, but I just noticed it now)
1. Pick up the nearest book
2. Open to page 123
3. Find the fifth sentence
4. Post the next three sentences
5. Tag five people and acknowledge who tagged you
So here goes:
The irreversible character of discovery suggests that no solution of a problem can be accredited as a discovery if it is achieved by a procedure following definite rules. For such a procedure would be reversible in the sense that it could be traced back stepwise to its beginning and repeated at will any number of times, like any arithmetical computation. Accordingly, any strictly formalized procedure would also be excluded as a means of achieving discovery."
Purely out of curiosity at what books people have near their computer, I'll tag Jon, Timmo, Bryan and Greg. But none of them should feel any obligation to respond.