 Even while under Heidegger’s influence Marcuse was never a mere Heideggerian. He recognized early on that Heidegger’s philosophy had certain limitations. He would eventually discover that Heidegger’s philosophy was not all that concrete. While Heidegger’s philosophy explicated the ontological structure of Dasein in its everydayness, it never dwelled at the ontic level. At the ontological level Heidegger merely examined the fundamental structures of Dasein. That is, Dasein in general carries out its life within a certain universal structure which is constituted by modes of existence such as fallenness, idle talk, boredom, care, being toward death, etc. What has been disclosed here are mere universal conditions or modes of existence in which Dasein happens and experiences happenings. However, these modes of existence are experienced in different ways, at different times, and with different levels of intensity by different individuals. 