Quite a few modern technologies have followed Moore-like exponential-shaped curves with rapid improvements and commercialisation. But this relatively common pa

Quite a few modern technologies have followed Moore-like exponential-shaped curves with rapid improvements and commercialisation. But this relatively common pattern does not seem to work all the time. Quantum Computing, Nuclear Fusion and AI are good counter examples. Progress in those areas seems to follow a less than linear curve, much closer to a logarithm than an exponential. We can only speculate about the reasons. Are we hitting some kind of ceiling?