One of the smartest tools I've written for myself on this is a little script that searches the entirety of my test transcripts in the skein.
I made my small change and then made a decision on the basis of "do you want to think? or you can just write a test?"
This led to me losing a bit of my transcript because I decided to implement this by extending an earlier test.
Maybe I should have thought.
Either way, time to run the tests again.