What is a Thunk?

A thunk, as used here, is a provisional chunk of thought.  A thunk is somewhere between a tweet and a blog post.  It may or may not be very good or clear or even coherent.  But,  it is, nevertheless, worth making public.

Why?  Three reasons really: firstly, to stem the tendency to procrastinate and leave good ideas in notebooks or in one’s head; secondly, to log and track ideas over time;  and thirdly, to solicit feedback and comment with a view to sharpening (or revising) the idea.