Mac OS X is Apple’s effort to create a best-of-both-breeds operating system which directly leverages the advances and experience Apple has in the user experience arena and the well-established power of BSD. Mac OS X begins with a BSD foundation called Darwin. On Darwin we build the programming toolkits from Mac OS which we call Carbon, which in turn enables us to layer on the new user interface known as Aqua. Carbon also provides a straightforward transition strategy for our existing application base. We also provide a toolkit called Cocoa, which is an object-oriented API derived from NeXT’s OpenStep. — The Challenges of Integrating the Unix and Mac OS Environments

• Basic Music Theory in ~200 Lines of Python
• Deriving the piano keyboard from biological principles using clustering

Git from the Bottom Up. #git

Today’s lunch

Just found out my way to long-lasting Inbox zero: Using Neomutt, macro index D "<tag-pattern>~d >1m<enter><tag-prefix-cond><delete-message>" "trash old mail".

Old times, good times. PostScript® LANGUAGE REFERENCE (3rd ed.) (PDF, 912 pp.).

Google making Recommender Systems at scale? https://github.com/WICG/floc

Currently reading:

The resulting outcome may not be in equilibrium and may display patterns and emergent phenomena not visible to equilibrium analysis. The economy becomes something not given and existing but constantly forming from a developing set of actions, strategies and beliefs — something not mechanistic, static, timeless and perfect but organic, always creating itself, alive and full of messy vitality. — Foundations of complexity economics

Morning, evening.

  Tindersticks, Hungry Saw.