Using recent experiments on Mott insulators as an example, I will talk about how new atomic emulators and quantum computers are beginning to complement condensed matter experiment and theory. Examples include spin chains, ladders, and Yb-based triangular lattice compounds. In the Heisenberg antiferromagnetic spin chain, whose ground state was famously solved by Hans Bethe, finite-temperature dynamics are surprisingly rich and show Kardar-Parisi-Zhang scaling for some quantities, as now observed in experiments on solids, atoms in lattices, and gate-based quantum computers. A divergence of quantum Fisher information can be inferred from neutron scattering observables. We discuss why this problem is particularly well suited to these multiple approaches and then discuss similar efforts on the frontier of how frustrated magnets behave in higher dimensions.