Not really.

You'll be learning how to defend yourself with quick and effective techniques. You'll be learning how to get out of holds and grabs. You'll be learning how to injure your attacker so that they won't be following you immediately giving you enough time to escape.

Yes, injure. What do you think your attacker has in mind for you? A friendly chess game?

Put it this way. You're minding your own business when someone jumps you. In 60 seconds one of you is going to be incapacitated. Who would you rather that be?