I think its likely.
What I find most frustrating about that fact is that is entirely possible not to think like an idiot. It’s a trainable skill to think clearly.
We spend a huge amount of money educating people and what we accomplish in 12 years is teaching them to read, possibly to write, and occasionally to be able to add up numbers.
We fail miserably at education. Mostly because we think education is about learning facts rather than learning the skill of thinking intelligently.
If you spend anytime on the internet, you will see countless people make ridiculous points, that have no logic, and/or no basis in fact. They never bother to run an idea through any kind of critical thinking, never bother to do the most minimal research on an idea.
We don’t have to live like this. We don’t have to have people starving. Dying of curable diseases. Living without shelter, dying in violence. We don’t have to strip the earth of all it’s resources and have our descendents die slowly in horrible circumstances because we were just too stupid to allow them the privilege of life.
But we do. We do because we are stupid.
And the more people there are in any group, the stupider the group becomes. And humans do tend to herd ourselves into groups, virtually as well as in real life. And once we are in the group, all we hear is the echo chamber of our own ideas and so we don’t feel any compulsion to consider anything differently.
And all of it is within our power to do differently. All of it. It only requires thought. And a desire for the greater good. But even if you are just a selfish clod, you must recognize the benefit gained to yourself by the greater good. Well, you recognize it when you use your brain to think critically.
So little hard thinking is done in this world. And eventually it will kill us.