Littyle ones go in the front, big ones in the back.
Murphy's Laws of Engineering (Originally: If anything can go wrong, it will):
1) The power transformer will always blow first in order to protect the fuse.
2) Paint will adhere to every surface but the one intended to be painted.
3) Self oscillating circuits won't.
4) Non oscillating circuits will.
5) An expert will always state the obvious.
6) Any wire cut to lenght will be too short.
7) A difficult task will be halted near completion by one tiny, previously insignificant detail.