For those wondering if there's actually something relevant to the Epic's approach to the metaverse: there's not beyond slide 3. Everything after slide 3 is a description of the semantics of a novel functional logic programming language, the sort of which you'd expect you'd get if you paid the world's premier Haskell core contributor a large sum to design a new language. Of course its intended audience is Haskell academics, so perhaps it would be weird to expect anything else.

Slide 61 and 63 hint at things that might actually be of consequence to real programmers making real software for a potentially real metaverse, such as the effect system for I/O, transactional memory and code organisation through classes and inheritance, but it gives no detail.

If you're interested how elegantly functions like head, tail, cons, snoc, append and map might be implemented, this presentation is for you. If you're more interested in how you might unpack a message from bytestring, model a state machine or coordinate a group of actors in a distributed system, then I guess you'll have to wait for the next presentation.