Common sense in simple terms is really simple to explain.

It’s the inherent knowledge in most functioning peoples’ brains that helps a person not die or get injured, basically.

It’s things like not walking in a highway, or jumping off a skyscraper just because.

There’s a difference between being suicidal and not having common sense.

It’s referred to as common sense because there’s usually a cognitive ability in our brain to distinguish between something that may cause us harm, and something that may not.

It’s common because most people have it, therefore making it, by definition, common.