Just a bit of esoterically-sientific approach to the Life, the Universe and Everything else.
Part I

Chip manufacturers rely on Moore's law when they plan their forthcoming product lines. It is therefore reasonable to suppose that it may continue to hold for some time. Using a conservative doubling time of two years, Moore's law predicts that the upper-end estimate of the human brain's processing power will be reached before 2019. Since this represents the performance of the best supercomputer in the world, one may add a few years to account for the delay that may occur before that level of computing power becomes available for doing experimental work in artificial intelligence. The exact numbers don't matter much here. The point is that human-level computing power has not been reached yet, but almost certainly will be attained well before 2050.