However, this concept dates back at least to the 1980s with Marvin Minsky's "The Society of the Mind":
https://www.amazon.com/Society-Mind-Marvin-Minsky/dp/0671657...
The New Turing Omnibus by A K Dewdney (https://www.amazon.com/New-Turing-Omnibus-Sixty-Six-Excursio...)
The Society of Mind by Marvin Minsky (https://www.amazon.com/Society-Mind-Marvin-Minsky/dp/0671657...)
Creating Mind: How the Brain Works by John E Dowling (https://www.amazon.com/Creating-Mind-How-Brain-Works/dp/0393...)
Nobody knows, because we don't know how to do it yet. There could be a "big breakthrough" tomorrow that more or less finishes it out, or it could take 100 years, or - worst case - Penrose turns out to be right and it's not possible at all.
Also, are there useful books, courses or papers that go into general AI research?
Of course there are. See:
https://www.amazon.com/Engineering-General-Intelligence-Part...
https://www.amazon.com/Engineering-General-Intelligence-Part...
https://www.amazon.com/Artificial-General-Intelligence-Cogni...
https://www.amazon.com/Universal-Artificial-Intelligence-Alg...
https://www.amazon.com/How-Create-Mind-Thought-Revealed/dp/0...
https://www.amazon.com/Intelligence-Understanding-Creation-I...
https://www.amazon.com/Society-Mind-Marvin-Minsky/dp/0671657...
https://www.amazon.com/Unified-Theories-Cognition-William-Le...
https://www.amazon.com/Master-Algorithm-Ultimate-Learning-Ma...
https://www.amazon.com/Singularity-Near-Humans-Transcend-Bio...
https://www.amazon.com/Emotion-Machine-Commonsense-Artificia...
https://www.amazon.com/Physical-Universe-Oxford-Cognitive-Ar...
See also, the work on various "Cognitive Architectures", including SOAR, ACT-R, CLARION, etc,
https://en.wikipedia.org/wiki/Cognitive_architecture
"Neuvoevolution"
https://en.wikipedia.org/wiki/Neuroevolution
and "Biologically Inspired Computing"
https://en.wikipedia.org/wiki/Biologically_inspired_computin...
http://www.amazon.com/The-Society-Mind-Marvin-Minsky/dp/0671...
> Most people think that accomplishments like [those of geniuses] require "talents" or "gifts" that cannot be explained… [but] I suspect that genius needs… unusually effective ways to learn. It’s not enough to learn a lot; one also has to manage what one learns. Those masters have, beneath the surface of their mastery, some special knacks of “higher-order” expertise, which help them organize and apply the things they learn. It is those hidden tricks of mental management that produce the systems that create those works of genius.
[1] https://www.amazon.com/Society-Mind-Marvin-Minsky/dp/0671657...