"Interest rate" have also another one meaning in "technical debt". Even if you don't touch the code at all, it loses its value. - Developers forget why did th

"Interest rate" have also another one meaning in "technical debt". Even if you don't touch the code at all, it loses its value. - Developers forget why did they make particular choices, and what were the implications. - Technologies do age, and there will be maintenance cost for updating that.