Most knowledge is contingent on premises and cannot be verified within the system easily it must be from without.. dependent on technology timeline Society us another factors It is difficult to disengage It's very difficult to rebuild social relationships in the wake of new ideas
Knowledge is knowledge because it's a tool not necessarily because it's true.
Too much knowledge can be a dangerous thing.
Since much of memory is reconstructed we shouldn't rely on our memory too much; example old people think young people are different but they forget the time when they were young! See the axiom the more things change the more things stay the same.