[mybrid]

If one is doing async programming my experience with Promises in JavaScript is that glossing it over only works to the degree the async mostly behaves like synchronous. To quote Albert Einstein, make something as simple as possible, but no simpler. If one is writing programs for asynchronous applications abstracting them away as if the asynchronous behavior environment doesn't exist is problematic.

Most developers I work with day-to-day are not designers. Fred Silverman's "The Mythical Man Month" from 1972 has a good take on this. The way I see it, languages like Erlang are amber that locks in dead code because no one except the original author can maintain it. Once code goes into maintenance mode good luck finding Erlang maintainers.

[macintux]

Erlang effectively makes everything asynchronous, so you're forced to deal with it. It's not glossed over at all, although it does give you good primitives to cope with it.