time reversal

I have an undergrad working with me, and I’ve been slowly teaching him the rules of science. So far, we have experienced the following rules in action together:
1. Nothing works on the first try.
2. Everything breaks at least once.
3. Every way it can break it will break.
And today, we learned a new one:
4. Sometimes after [...]

There seems to be a giant discrepancy in hours in lab between those who have wives/girlfriends, and those who are single. The otherwise committed ones mostly seem to work normal hours. Now obviously they work longer hours when it’s really crunch time, and sometimes they do analysis at home, but mostly they keep to a [...]