The skill of using everyday knowledge to make sensible guesses.
Commonsense reasoning is like a parent in the school pickup line. One look at a muddy kid says, “Do not let him sit on the white couch.”
You meet it when chatbots answer questions. Robots use it too. It feels more human, but odd cases can still fool it.
Reasoning-model
A reasoning model can handle steps, but it may still lack steady common sense.
World model
Commonsense reasoning needs a basic feel for objects, causes, and scenes.
Hallucination
Common sense can filter some silly answers, but it cannot stop every hallucination.