Ericsson to WhatsApp: The Story of Erlang
I still recall a CS jobs fair at my college ~8 years ago, where some company representative took a very bad liking to Erlang on my CV (I took a "Programming Languages" course where Erlang was one of ~6 languages we chewed through. s/o venkat!)He kept asking "why use this over Java at my work X". He seemed to have the idea I wanted to join his company and rewrite their web administrative tools used by 5  people in Erlang. Not sure why he got so annoyed, and didn't ask me about anything other than a language he thought was silly!