Explore treelike geometries and fast scrambling in nonlocal spin models through this 31-minute conference talk by Gregory Bentsen at the Institute for Advanced Study's Workshop on Qubits and Spacetime. Delve into quantum spacetime, artificial spacetime, and the fast scrambling conjecture. Gain insights into optical cavities, chaos, and numerical simulations. Examine magnetic field gradients, couplings, and parameterization. Investigate the Bruja, linear chains, dimers, and long-range coupling. Conclude with a review of experimental findings in this cutting-edge exploration of quantum physics and spacetime dynamics.