I recently read an interesting entry in the Nintil blog that tries to frame our understanding of biology by asking several key questions. The questions were derived/inspired from Tinberg’s four questions, which are four general directions one can take, ( (evolutionary, proximate or individual) X (ontogenic, mechanistic) ), when studying biological traits. The questions were mainly written with animal behavior in mind (Tinberg was an ethologist) but are broadly applicable to any biological c...