From the NSF-backed study Converging Technologies in Society: Managing Nano-Info-Cogno-Bio Innovations (2005), on page 344:
48. Scientists will be able to understand and describe human intentions,
beliefs, desires, feelings and motives in terms of well-defined computational
50. The computing power and scientific knowledge will exist to build
machines that are functionally equivalent to the human brain. (5.6)
This is the median estimate from 26 participants in the study, mostly scientists.
Only 74 years away! WWII was 66 years ago, for reference. In the scheme of history, that is nothing.
Of course, the queried sample is non-representative of smart people everywhere.