I’m not sure specifically which examples Hamlet is thinking of, but Objectivists would be an obvious example of a group that tried to be rational and through the problems Hamlet listed as well a handful of other problems like evaporative cooling settled on a single set of beliefs across a wide-variety of different issues and haven’t updated much in the last fifty years.
What real examples are you thinking of?
I’m not sure specifically which examples Hamlet is thinking of, but Objectivists would be an obvious example of a group that tried to be rational and through the problems Hamlet listed as well a handful of other problems like evaporative cooling settled on a single set of beliefs across a wide-variety of different issues and haven’t updated much in the last fifty years.