The Creative Problem Solver's Toolbox, by Richard Fobes. The brilliant description of radial outlines in this book gave me a repeatable process for coming up with creative solutions which I have applied to countless problems for over 20 years.
Agreed on the Bob Martin book. For project estimates I have presented estimates this way and I find that executives understand it and it lets me present an estimate and a commitment separately in an understandable way. A summary of his explanation of estimates as probability distributions is here: https://codingjourneyman.com/2014/10/06/the-clean-coder-esti...
Probably a more of a statement about my sense of humor than anything else, but this is, by not even close, the funniest thing I have ever read on Hacker News!