If you want to hear me ramble about quantum noise and cosmic neutrinos, gravitational waves, and axions over zoom, this is tomorrow 4pm ET: sites.google.com/view/hepastr...

Gravity could come from gravitons, like light comes from photons. Or maybe, like sound waves in a gas, it could come from the entropic dynamics of some microscopic thermal system. But could that really work? And could it be tested? We think so. arxiv.org/abs/2502.17575

Could gravity be "fundamentally classical"? Akira Matsumura and I analyzed Oppenheim (@postquantum.bsky.social) et al.'s proposal. tl;dr: A. it appears to have Lorentz-covariant scattering B. 2—>2 scattering differs at O(1) from the usual Rutherford/Newton answer arxiv.org/abs/2412.04839

Look upon my TikZ, ye mighty, and despair.