3 ms·Someone who doesn't believe that stack is "space" will not believe that it's "memory" either. :)by kazinator 2y agoSomeone who doesn't believe that stack is "space" will not believe that it's "memory" either. :)hughw 2y agoTail call optimization uses no stack at allkazinator 2y agoTherefore it would not be said to use space in proportion to the number of calls that have not returned.