"7/10" feels like an answer, but it isn't one. It's a number that lets you avoid saying whether something is actually good enough - a way to sound engaged while committing to nothing.
When someone asks "how was it?" or "is this good?", a 7/10 score:
It protects the reviewer from an uncomfortable conversation, but it leaves the person asking with nothing they can act on. If it's not good enough to ship, say so - and say why. If it's good, say that too - specifically.
Note this isn't a rule against numbers - a score like 8 or 9 out of 10 is fine, and can even be a great way to compliment someone. The problem is the bare, non-committal middle number with no reasoning attached. A decisive score paired with specific feedback is just as good as a pass/fail.
❌ Figure: Bad example - A vague score gives the team nothing to act on
✅ Figure: Good example - A decisive score plus specific feedback the team can act on
A rating only becomes useful once you explain the gap. "7/10" tells no one anything - "9/10, solid work, just fix the error handling before it ships" tells everyone what to do next.