 What are we talking about when we talk about stuff? We will first look at the three main answers given in  section 2.  The first answer, by far the most popular (and consequently receiving the most attention), is that stuff-talk is talk about masses of particles or molecules. The second is that stuff-talk is talk about sets, and, lastly, that it is talk about many things (or ‘pluralities’). The views in  section 2,  in one way or another, hold that stuff is very thing-like or reducible to things.