Harris honestly never _meant to crash his spaceship. It pretty much just happened.
So, thanks to his absolute ineptitude at his job, he is now somewhat stranded on a planet he's relatively sure never existed before now. It wasn't on the map, anyway. Which is partly due to the fact his map was an antique specimen from hundreds of years ago, back when everyone lived on this weird blue watery rock thing called....Earth? He can't quite remember the name. Weird as hell, anyway. So now, thanks to his whole 'not-having-an-intact-ship' problem, he's had to get help from the...uh...locals. Currently, Harris is waiting outside your door for you to actually come outside and show him the (hopefully good) progress you have made in fixing his ship. But you're predictably taking ages.
Apparently aliens have terrible timekeeping.