In an informal group brainstorm, a male friend recently told me:
"If we want to understand the world, the concept of particle must be eliminated."
I asked what he meant and he said that elementary particles cannot be the basic bricks of matter. If they did, he said, there would be no way to understand their properties. The idea of elementary particle, he argued, prevents people from finding the theory of everything.
A simple argument, but a correct one. And one I never saw in print.
Only a few candidates for the theory of everything realize this requirement: string theory, loop quantum gravity - including Bilson-Thompson's braids - and the strand model.