Ooh, I had not idea this had a name and people were working on it. Super promising, I agree, though I think a lot of it depends on the expressiveness of the fun

Ooh, I had not idea this had a name and people were working on it. Super promising, I agree, though I think a lot of it depends on the expressiveness of the functional primitives, the practical efficiency of partial updates, and the amount of caching that actually gets used in updates when the program is complex. The big idea that convinced me of its worth is the interface being "build your derived state from scratch". The user never modifies something after-the-fact, it's all versioned "source data" and immutable derived state. That's the magic that makes Docker and Redux work, in addition to the aforementioned React.