Very well said. Complementing your answer, I'd also like to point out that another notable guarantee that promises give us is that their continuations are neve

Very well said. Complementing your answer, I'd also like to point out that another notable guarantee that promises give us is that their continuations are never executed synchronously (even when they could), which prevents the problem described by https://blog.izs.me/2013/08/designing-apis-for-asynchrony/ https://blog.izs.me/2013/08/designing-apis-for-asynchrony/.