> Yarn is a perfect example. It came out very recently, relatively speaking. And yet it's clearly the future.

Node threw themselves into Semver, and it was supposed to be great. Nobody needs a lockfile because everyone obeys semver, so every time you do 'npm install' your app is guaranteed to work because everything is semver'd!

Oh wait, no, that didn't work out. Better freeze every dependency and sub dependency because who knows what will break when we update!

This is why throwing yourself at whatever shiny new thing without thinking or looking at how other languages do it is not always a great idea.