Errors
Error critique looks before and after failure
- Prevent avoidable errors where possible.
- When errors happen, say what went wrong in plain language.
- The message should help the user continue.
Weak versus strong
Prevention
Weak
Let user fail silently.
Strong
Warn when removing the last shortlisted laptop.
Diagnosis
Weak
Something went wrong.
Strong
Tell the user why comparison cannot load.
Recovery
Weak
Dead end.
Strong
Offer retry, save later, or contact support.