@dysfun Pity. You can do fun things with even just the tiniest bit of access to the system hardware. (You also learn to swear at length and enthusiasm at Intel since their MMU hardware is... somewhat quirky and not necessarily as awesomely performant as one might want) It can make some of the generational copying algorithms a lot faster and you can make some of the transactional algorithms conceptually simpler if you squint right.