This article came out about the same time as the first volume of Weinberg's textbook The Quantum Theory of Fields. It's a nice semi-technical distillation of t

This article came out about the same time as the first volume of Weinberg's textbook The Quantum Theory of Fields. It's a nice semi-technical distillation of the core argument in his textbook: We see a world made of particles, but Poincare invariance and cluster decomposition (the fact that widely separated systems behave approximately independently) force us to organize these particles into fields.