[g0wda]

Hey, I made this notebook. Thanks!

SICP talks about abstraction barriers, and I love the idea. It can guide great library design. When in doubt, I sometimes read this again: https://mitpress.mit.edu/sicp/full-text/sicp/book/node29.htm...

[journeeman]

And the best way to find the right abstraction barriers is 'wishful thinking'. :-)

Greatly reduces the 'Invent and fit; have fits and reinvent!' cycle.