That's what I don't get about the article, and some other comments address this as well. Fluid flow is everywhere, whether we have flush toilets or throw a buck

That's what I don't get about the article, and some other comments address this as well. Fluid flow is everywhere, whether we have flush toilets or throw a bucket into a gutter somewhere! The statements "differential equations exist that describe fluid flow in certain contexts" and "all people can write down Navier-Stokes on command" are two versions of "math is everywhere". Mathematicians mean the first and this author basically discusses the second, which no mathematician ever would say. Straw man indeed. I too would like to know what/who Barany might be arguing against; maybe it would clarify the article.