I follow your habits but never speak, I judge all your choices, and never peek. I catch your mistakes and remind you of pain, Ignore me too long and you’ll do it again.

A shot in the dark, when formed without proof. An answer or theory, that's plausibly true...and you might take one now, without needing a clue.

I am made from sixty, and I make something from sixty. Who am I?

I speak in numbers though speech I lack, I build a road but never lay a track; Give me two and I’ll make ten come back.

The man who made it, didn’t want it. The man who bought it, didn’t need it. The man who used it, didn’t know it. What is it?