"This site contains the original source code for Elite on the BBC Micro, with every single line documented and (for the most part) explained."
Assembly is, it turns out, dark, dark magic. This is a very impressive thing to pore over – like Lions' Guide, but for Elite.
I enjoyed this, in part as analysis of the unique role of masterclasses as opposed to lessons or crits. Also, useful to think about the _many_ ways feedback can exist, and how 'changing it up' can sometimes just be useful.