Interesting (though pessimistic) commentary on the fundamental value of bitcoin: the network is only viable if the value of a bitcoin exceeds the mining cost.
miniblog.
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"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'.
On assigning programming tasks perform in class, enabling students to ask fundamental questions that help them understand the abstractions:
