I remember very well one of the first public presentations about Go. It focused heavily on goroutines and channels and included a live demonstration of pushing an element through one million channels. It also included a demo of spinning up three racing queries to the Google search engine using the select statement, and picking whoever returned first. it was all about the new cool feature. They also had TCP-over-channels and eventually had to remove that because the model didn’t fit.

Nobody may have known they cared about Erlang, but those features sure made people pay attention.