Yeah, the input is actually a list of strings (arguments), a map of strings to strings (environment variables), and a string. (Assuming that we're not doing an

Yeah, the input is actually a list of strings (arguments), a map of strings to strings (environment variables), and a string. (Assuming that we're not doing anything interesting with the file descriptors; I can see an argument for excluding that possibility from this discussion, but certainly it's a simplification.)