U7.04
Thresholds, targets, and alerts
Cards in this group · 5
- U7.04.1A threshold compresses a continuous number into a normal-or-abnormal judgment readers can act on fast
- U7.04.2A threshold is a human decision, not a law of nature, so its rationale should be visible and adjustable
- U7.04.3Crossing a threshold once and crossing it continuously are different problems needing different responses
- U7.04.4A flood of unimportant alerts teaches users the rational response is to stop paying attention
- U7.04.5An alert that reports a number without saying what to do next has only done half its job