Re: Stuck a finger...
Another angle on this... Ben Aaronovitch's "Rivers of London" urban-fantasy series combines magic, rather a lot of horrific violence, and what I believe to be a well-informed and maybe even realistic portrayal of ethical and diligent police work at street level. Anyway, several times in the series, the officer we're usually following, Peter Grant, explains to us that he's just found the clue he was looking for - but that you still keep looking for anything else that could be relevant, because that's the job - doing it properly.
Of course this doesn't really apply to you looking around the house for your car keys, because when you find them, you are reasonably sure that there aren't more sets of car keys that you can usefully find... though, come to think, there are some important keys that I've lost track of. Maybe if I just kept looking, I'd find everything.