> Why do you need route? Because it creates a left-recursive call that will eventually cause a stack overflow. If you want to try it out, there's Swish[0] - a

> Why do you need route? Because it creates a left-recursive call that will eventually cause a stack overflow. If you want to try it out, there's Swish[0] - an online prolog editor and interpreter. [0]: https://swish.swi-prolog.org/ https://swish.swi-prolog.org/