Full Idea
It is no longer helpful to conceive of either the world, or particular systems of the world that we study in partial isolation, as 'made of' anything at all. …Our target here is the metaphysical idea of composition.
Gist of Idea
The idea of composition, that parts of the world are 'made of' something, is no longer helpful
Source
J Ladyman / D Ross (Every Thing Must Go [2007], 1.1)
Book Reference
Ladyman,J/Ross,D: 'Every Thing Must Go' [OUP 2007], p.4
A Reaction
This is argued by them from the point of view of fundamental physics as the provider of our basic metaphysics about the world. Personally I really really want to know what electrons are made of, but I know no one is going to tell me. They may even laugh.