Thinking

I probably shouldn't be writing about this, since I'm not much good at this myself. But there are people even worse at it. Much worse, in fact.

And they are not just worse at it, they are allergic to the stuff and fight against it - without realizing this at all.

Thinking, a mental activity, is also related to one's physical condition. And as I age, it deteriorates.

 We are born with the ability to think, but it has to be exercised.

And now that we live with thinking machines, we have to upgrade our thinking also, to make it compatible.