The more I've observed people my age and teenagerish, the more I've come to the conclusion that ways of thinking are changing. There's a general discontent with how the world is ordered, and it only grows with age.
Post Modernism will be with us for a while yet, but I doubt that it will remain long enough to bother people 50 years from now. By then, it will be defined as a minor bump on the road between the end of the Enlightenment and the beginning of controlled anarchy.
What irks the youth of today are the continuing mixed messages we get. There are two sets of schools of thought competing for our allegience. The first set is made of the much derided relativistic schools. The second set is filled by the empirical schools. Both bombard us with their dogma, and the number of "bites" they are getting is diminishing.
The movement that is ever so subtlely beginning is one that rejects both "there are no absolutes" and "everything is absolute". In many ways it's a "common sense" movement. It goes without saying that there are absolutes and there are grey areas. Ultimately what will preserve Post Modernism for a while is the entrenchment of empiricism in established institutes, but when it has served its purpose in destroying empricism's credibility it will fade.
Right now the movement's in a celluar state, just fertilized and beginning to develop. Exactly what it will look like at birth, adulthood, and seniority are beyond anyone's ability to predict. However, some trends are clear. Young adults are rejecting institutions for their inefficiency and insincerity, yet find that anarchy is inefficient as well. Some bridging of the two will occur, assuming the second coming doesn't happen first.
That's all I can write for now. There's a large thunderstorm and I think it may knock out power just long enough to erase what I've written.