Aristotle's categories and causes are all very familiar concepts, so familiar that people don't reflect on them. These "memes" are already there, they're just not organised and criticised. It's like physics. You can go through life without ever sorting out your ideas about force, energy, momentum... or you can take a few steps on the road which leads, if you continue along it, to arcana like the mass of the Higgs boson. Similarly, you can go through life without wondering what it means to "have a property" or to "be a cause", or, you can take up metaphysics. Aristotle is to metaphysics what Newton is to physics, one of the early landmark thinkers whose subsequent imprint is ubiquitous.