Threshold policy: from probability to action Diagram

Three zones from the Confidence page

High: act automatically; medium: proceed with caution; low: do not act
Noul has no confidence, so policy reads noul = P(yes) directly

The charged-twice ticket

Route ticket (0.9 / 0.5): department 0.93 → automatic
urgency 0.62 → light review; refund (0.98 / 0.75): 0.91 → light review

The thresholds are yours

The numbers are the blog's example, not a TypeSafe recommendation
The harder an action is to undo, the higher the bar; tune on real traffic