There's always a catch in it...
/One of the reasons why I like writing software is that I always find doing things in the "real world" much harder. Simple tasks can take on a life of their own. Take our kitchen door lock for example. We're doing some painting, which involved removing the handle. When I tried to put it back together I discovered that the catch mechanism had completely collapsed. Of course, I only found this out once I'd closed the door and then couldn't open it, which required some fancy shenanigans just to get the door back open.
Once I'd isolated the broken part I was very pleased to find that I can get a new lock mechanism from ScrewFix for just 79 pence. I was somewhat less pleased to find that this replacement was a tiny bit too big for the hole in the door, so I had to spend a fiver on a smaller one. Which it turned out didn't fit either. I think our house was built in a time when the inch was slightly smaller than it is now.
Anyhoo, the proper way to make the lock fit would have been to reach into my toolkit and produce a shiny, sharp chisel of exactly the right size and cut out the excess wood. Of course, that's not going to happen in my house, so I ended up using an electric drill to just enlarge the edges of the hole until it was big enough. We now have a door with a handle that works, having done only around three times as much work as I thought I'd have to....