

Yes, it’s cultural. Using your hands to think in general is natural, just like head movements - but the actual movements we use are cultural
There’s some natural shaping to the movements, such as tilting your head to signal you’re paying close attention - tilting your head can help you hear more clearly. In the same way, covering your lips in some way signals you’re not trying to speak
But ultimately, in another timeline everyone would be bobbing their head from side to side to signal consideration… It’s shaped by instinct to some extent, but dominated by culture








I try to calmly explain to people how if you hear something enough, you start to believe it blindly
I also explain how the reward schedules of social media are terrible for you
I have not had great results. I’ve helped encourage people who already understood all this to be more mindful of their media diet, but people blindly enraged at imaginary enemies don’t seem to be moved