Your brain is also self-reflective. It can from the inside change its expectations. Reaching for the metaphor of evolved prediction machine implies you can't train in any other way, but you can. Let's say society collectively decides (or capitalism) that we need liesure living just like Europeans do, then that will be the system. Why are we following on Elon's footsteps of compressing 1000 years of progress into 100 years. No asteriod is coming to destroy us, so no rush.

Sure - no real argument but it's maybe worth examining the assumptions underlying this which you know exist because you say 'maybe' and 'I am afraid ...'. Accounts abound as to why 'doing nothing' is not necessarily a negative activity. If you're in good health, sometimes absolutely passivity after having drunk in the fact that 'For a while I am alive and consciousness in this inexplicably incredible universe and it's a massive privilege' is extraordinarily beneficial for the times you are not predicting.

> Your brain is a prediction machine

It's not.

> I am afraid doing nothing is inhibiting that function

It isn't.

> I think it's perfectly healthy to not want to be a vegetable

Not having an opinion about everything for 3 minutes != vegetable.

The author of the post is selling what he himself doesn't understand. Paying attention to your inner chatter without judgement is part of a much broader tradition. Westerners stealing bits from cultures they don't understand is nothing new. Neither is the polarizing fascination/dismissal it entails.