The paper is really nicely written: https://arxiv.org/abs/2007.01409 https://arxiv.org/abs/2007.01409 It's lengthy and full of some quite technical sections, b

The paper is really nicely written: https://arxiv.org/abs/2007.01409 https://arxiv.org/abs/2007.01409 It's lengthy and full of some quite technical sections, but those are interspersed with sections sketching the high-level intuition and proving more informal versions of the technical theorems in simplified cases. An example is on p. 19, section 3.1, "Ideas underlying proof of Theorem 3.1".