One nice thing about driving long distance is that as you listen to the radio for diversion, you may learn something new. Thus I learned the phrase drill down, meaning "to become more specific about a subject". The term appears in one-look only in the specialty dictionaries for business, computing, and tech, not in the general dictionaries. However, it seems to be becoming more general, for the use I heard is in an interview about medical research.

"We have come up with a particular gene in which variation affects risks for alcoholism." "Why don't we drill down on this one. It’s a sub-unit of the GABA receptor."
(from here, load clip for Alcohol Gene Study; quote at about 4:50 of clip)

Shufie baby! We talked about this when I was new to the board. The link is here.

I think I can still recoup this thread.

On the same program, Shu and I heard an interesting word, "antibias." Have you heard it? It means bias in the opposite direction. How would you use it?