"Open source is a software development model that enables the community to build what one person cannot." http://t.co/2QTIMoHL2x
Related Posts
Learning software development through playing and contributing to a MUD: https://tashian.com/articles/how-i-learned-to-program/
"Example Driven Development" using Glamorous and Pharo Smalltalk: https://medium.com/feenk/an-example-of-example-driven-development-4dea0d995920
Tests returning values and composing is a really interesting model. It establishes structure and shows which test failure is the most 'fundamental'.
One cute feature of markdown I'd not noticed before: there's no syntax for images *without* a description (i.e. alt text).

https://spec.commonmark.org/0.31.2/#images