It can but it's somewhat orthogonal. What F really is, is a closure. Besides being a function it may also capture its surrounding variables. However, if in that

It can but it's somewhat orthogonal. What F really is, is a closure. Besides being a function it may also capture its surrounding variables. However, if in that closure it calls a function from some module like foo:bar(Var) the module foo bytecode still needs to be available on the remote node. There is a way to remotely load module bytecode to remote nodes but the just sending the closure F itself won't do it. It has to be done separately (https://www.erlang.org/doc/man/code#load_binary-3 https://www.erlang.org/doc/man/code#load_binary-3 is one way to do it or the shell prompt's nl(...) function does the same).