100%, when I started building Lumen, I spent an enormous amount of time working out how various parts of the BEAM runtime were implemented, and it was (and stil

100%, when I started building Lumen, I spent an enormous amount of time working out how various parts of the BEAM runtime were implemented, and it was (and still is sometimes) a grind. That macro-heavy C code is just such a bear to read. I understand why it was written that way, but working with it is just unpleasant. Having Enigma, and other implementations like it, provides a huge value in terms of understanding how it all fits together - understanding the Enigma implementation and then going and trying to make sense of the BEAM would probably be a way better path than trying to dive into the BEAM straight away.