Negation of the Negation

Already after reading the first few pages I think there are some relevant concepts in the very idea of "Negative Dialectics" which negates the Hegelian/Marxist concept of the materialist dialectic of human history, where change is always a product of a clashing of contradicting forces resulting in the negation of the previous scenario, with a positive outcome each time.  Feudalism was negated by Capitalism which should eventually be negated by Socialism/Communism, etc.  Hence these negations being negated equal a positive outcome and working out of conflicts/contradictions. Adorno rejects that the negation of the negation always results in positive situations, hence the prevalent misery of modern conditions and the failure of Communism in where it managed to manifest as becoming just another totalitarian control structure.  Negative Dialectics is basically saying that despite the synthesis and negations of historical dialectics, there isn't a progress towards human happiness.  Just progress "from the slingshot to the atom bomb".  Adorno also points out that the very fact that Auschwitz happened is proof that there is no point to life.  I think these echo in Endgame in a less articulated way.. namely the suggestion that life is meaningless and that mankind seems hardwired to make itself miserable.  I will follow up with specific examples later when I'm not at work.  Just some food for thought