SH: Should we set an alarm?
The clock in question.
Me: Oh yeah. We have tennis in the morning. I can set my clock.
SH: No! Yours isn't accurate enough.
Me: What do you mean? We need to be up at 7:30.
SH: And it might be 7:25 or 7:20. You can't tell. I should set the clock radio.
Me: It's just a few minutes. What's the big deal?
SH: Those are precious minutes I could be sleeping.