This is absolutely the best explanation of virtual particles I have ever seen. I've worked through pages of Quantum Field Theory (I'm literally looking at my co

This is absolutely the best explanation of virtual particles I have ever seen. I've worked through pages of Quantum Field Theory (I'm literally looking at my copy of Peskin and Schroeder sitting atop Krane right now), expanded and calculated hundreds of Feynman diagrams, written pages about these concepts, and yet I would say this article gives the best intuitive explanation of what is going on I've ever seen. I absolutely love that he mixes in the aside about the permittivity of free space arising from loops in the vacuum. I am adding this framework to my set of tools to explain (and intuit about) QFT. And going back for a reread now. Well done!