And if you accidentally punch someone in then it was exactly that, an accident. You aren't intentionally trying to hurt them. You were doing jumping jacks in your living room and your brother walked into you. Does that mean you aren't allowed to do jumping jacks anymore because you MIGHT accidentally punch someone in the face? Thank you for presenting the foundation for such a strong counter argument. It helped .
Do you understand now? Intention doesn't matter. You still hurt someone, and the right thing to do when you hurt someone is to apologize and try your d*mndest not to do it again.