"Yesterday I went to a job interview, at a company in New York that had once built their stack (for managing online advertising) in Ruby but who are now transit

"Yesterday I went to a job interview, at a company in New York that had once built their stack (for managing online advertising) in Ruby but who are now transitioning all of their stuff to Clojure." I would have probably walked out or at least snarkily asked them if these types of algorithms are what's done day to day. The answer more than likely being no.