Oh no, that’s just a misnomer. Common sense is not at all common. It should be, maybe, depending on the context, and maybe by a certain age it is. But it’s not common as in applies to most people.

It’s like “everyone knows”.

Yes this is 10,000.

https://xkcd.com/1053/

However, literally all of us have the Parasympathetic nervous system. You’d pretty much fail to be alive without it.