We don't need it to write code, and maybe not even to be efficient at it. Carmack wrote an article about the time he worked with Saabs aerospace people. They wr

We don't need it to write code, and maybe not even to be efficient at it. Carmack wrote an article about the time he worked with Saabs aerospace people. They write flight controls track databases sensor contol targeting etc. with no calls or backward branches except the end of the main loop. So every matrix multiply is duplicated in place. That is very complicated code. Carmack was inspired by that and used a less strict form of that ruleset for his next project. He allowed for functions as long as they were pure but nothing else.