Learn functional programming <- I remember hearing the same argument for object oriented programming 20 years ago. The good old golden hammer :) Learn the tool

Learn functional programming <- I remember hearing the same argument for object oriented programming 20 years ago. The good old golden hammer :) Learn the tool or technology that fits well your problem space whatever it might be : golang for highly concurrent server side, functional for something that maps easily to math stuff, event based programming for request/response, etc.