Comment by shalabajser

Your point is true but it is too narrow. A similar argument was bandied about regarding the CPU clock which hit a wall which was defeated with multi-cores and parallelization. The atom wall you are talking about is crushed with 3D semiconductors (hybrid bonding, wafer to wafer..., HBM), wafer scale CPUs like Cerebras, larger clusters, faster networking... Incidentally, massive parallelization suits AI just fine. Do you seriously think that computing power will stop growing? Ever?