Record your observations
“Physics: there was the key. Record your observations. Apply physical principles.Speculate, but only trust proven conclusions. If I were to make any progress, I’d have to treat the task as a freshman physics problem. Time to update my notebook.” —Cliff Stoll, The Cuckoo’s Egg.
Recording observations. Updating notebooks. Something we computer people frequently forget regardless of the big data hype and logging infrastructures that we build.