Commonsense is NOT about FACTS.

 Commonsense is not about facts. It, being a 'SENSE', is not captured by the commonsense facts or commonsense knowledge.

Consider a table. Firstly, why do you keep a table standing on its legs, and not on its surface? Well, that commonsense. Meaning? Meaning, a table is meant to keep things at a certain height from the ground, in space. Hence a table is kept that way. This is the common SENSE (or the rationale) about a table. This is not captured by, say, the 3 commonsense facts or pieces of commonsense knowledge about a table that - 1. "A table stands on legs", 2. "There is a flat surface on top of the legs of a table" and 3. Things are kept (/a table is used to keep things) on top of it, on its surface.