Question

Mistakes are bound to occur alternative

Answer 1

it is a natural consequence of something that is already known or exists..

IN DETAIL

If you say that something is bound to happen, you mean that you are sure it will happen, because it is a natural consequence of something that is already known or exists. ... If you say that something is bound to happen or be true, you feel confident and certain of it, although you have no definite knowledge or evidence.