The Meta Mechanism That Causes Our Minds to Get Stuck

So we're interested in like progress generally and then also like the reduction of suffering you'd say. So I think these are kind of the same thing like I think basically like suffering is when paths to progress get blocked. And then the question that I have is what is the like very specific internal mechanism by which this happens. What is actually happening in a mind that causes it to get stuck because it seems like a sort of a strange thing for a mind to do. Is it like, is it constantly sort of just diverted to something else or how does that happen?