Bob Newhart says he wasn't a very good accountant (his profession before comedy) because he always thought "within a few cents" was "close enough".
For the same reason I will never be a computer programmer. I've just spent 20 minutes trying to add Terah to my links list. The preview showed her name, right there under her husband John's name. I clicked save changes and ta-dah! Nothing. Well I'm hoping that one day I will open my blog to find Terah listed.
This is why I farm. When the bales fall off the wagon, it's obvious what needs to be done. On my computer I find myself talking to an object, outloud, and half yelling and half begging "Ah com'on. That's close enough isn't it??