Sometimes changing one line of legacy code is incredibly difficult than totally rewriting the entire stuff. - Joe Armstrong

why do we write things from scratch all the time and reimplementing things? because it's quicker than finding another programming language that does it. We can't find this program, and if we find it, it does something slightly different to the one we wanted and it's quicker to rewrite a new program than modify the old program.

The Middle man is the thing that imposed Erlang only in the Erlang world. If people try to talk to each other, the complexity of the program is O(N²). But, if we put middle men here, this turns the complexity to O(N).

I don't like modules. It's a sort of love/hate relationship. The problem with modules is the classification problem. When you have written a function you don't know in what modules you put it in.