It is virtually impossible to go back to a non unidirectional ui without feeling gross and disgusted. Working on a major angular project after doing some cljs with react feels like a decades step back - back to a horrible jsf like two way data binding disaster. Where is my state? Where is my api? Why did x put y here?

If it doesn't take hold this generation, it will definitely cycle back decades from now as the dominant way to structure ui code.

Between unidirectional flows and observables (or maybe some other async primitive) UI is getting very interesting these days. Personally I prefer rx to core.async. Core async just looks too awkward and low-level for me. RX I got immediately - a promise for a stream. Great stuff.