Transcription: What if we preserve the letters that are a bit closer to what we want and dump the rest? To keep it simple, let's just say that if he gets a right letter in the right place, we'll keep that letter and retry the rest. So if he typed this, we'd keep the A because it's the right letter in the right place and juggle the rest. This is kind of how evolution works. A random change followed by non-random selection, which keeps the useful changes. So how many attempts do we need then? We'll try it in life games. Wanna go there now?