Tail call optimization

Tail call optimization is a way for computers to run programs more quickly and efficiently. It works by reusing information that was already used to save time instead of doing it all over again. When a program wants to do something like make a calculation, it will "call" another program that can make that calculation. The "tail call" is when the result from the second program is put directly into the first one without doing any extra steps. This saves time and helps the computer run faster.