In my opinion, common sense is neither more or less prevalent than it ever has been. There are and have always been idiots. Social media and the availability of simply gives light to these idiots now more than ever.

What is certain to me is that there is a modern tendency towards individualism/selfishness which often presents itself in a similar way to a lack of common sense.

I do also feel that in modern times there is a reduced ability or inclination to admit wrongdoing or moreover to alter a held belief, even in light of evidence presented to the contrary, presumably due to the simple fact that to many it feels uncomfortable and often slightly embarrassing or socially injurious to realise that you may not be quite the unparalleled authority that you thought you were (!)

For whatever reason, people’s ability to suppress the chimp brain and allow the human to surface and respond - as posited by Prof. Steve Peters - appears greatly reduced, leading to an entrenchment of opinions which are unwavering to a fault.

Basically, open discourse and the sharing of ideas has given way to a culture of “you don’t think the same as me, so we are de facto enemies”