I remember watching, years ago, a lecture by (or an interview of) Marvin Minsky, in which he gave a numerical estimate of how much information was in the common sense. He stated that the common sense consists of X many facts or rules (My recollection of the actual number is vague)
What might that video be called, and did he write any papers with such a numerical estimate?
Some numbers can be found in the wiki article on Cyc:
The back-of-the-envelope calculations by Doug, Alan, and their colleagues (including Marvin Minsky, Allen Newell, Edward Feigenbaum, and John McCarthy) indicated that that effort would require between 1000 and 3000 person-years of effort
and
The Cyc knowledge base... as of 2017 is about 24.5 million [rules and assertions] and has taken well over 1,000 person-years of effort to construct."
Also see Minsky's book, The Emotion Machine:
This suggests that in each important realm, one might know perhaps a million things. But while it is easy to think of a dozen such realms, it is hard to think of a hundred of them. This suggests that a machine that does humanlike reasoning might only need a few dozen millions of items of knowledge
with the footnote
This discussion is adapted from my introduction to Semantic Information Processing, MIT Press, 1969.
