<human>: Here is a goal: How do you know you'll need to replenish your staple supply?

How would you accomplish this goal?

OPTIONS:
- Mark one end of 20 or so staples with a red sharpie pen. Load them so that red ones will be used at the end. When your stapler starts punching red, you need to buy staples.
- Mark one end of 20 or so staples with a red sharpie pen. Load them so that red ones will be used at first. When your stapler starts punching red, you need to buy staples.
<bot>: Mark one end of 20 or so staples with a red sharpie pen. Load them so that red ones will be used at the end. When your stapler starts punching red, you need to buy staples.