1. Elixir Keywords are Erlang's proplists plus syntactic sugar (making them easier to write and read), which in turn I guess were inspired by proplists in Lisp,

1. Elixir Keywords are Erlang's proplists plus syntactic sugar (making them easier to write and read), which in turn I guess were inspired by proplists in Lisp, but there they're lists of cons-cells, not a list of 2-tuples. Also Erlang's proplists have a special case for Boolean flags, e.g. instead of [{key, true}] one can just write [key]. 2. I think Phoenix Contexts are inspired by the DDD Bounded Contexts - a strategic pattern, which seems not be relevant for a typical web app built with Phoenix. But maybe it serves as a forcing function for the developer to think about the domain and how it may evolve in the future. 3. I surprised the author didn't complained about overuse of sigils in the language ;)