There is probably no deterministic "for(;;) { do X }" formula for learning in complex real-world domains. You could make an anthropic argument here: if there were, life and intelligence would not exist since whatever thermodynamically-favored auto-catalytic processes life does could be replaced by non-living systems of lower entropy and higher probability. The existence of life as the chaotic, ever-changing, evolving system that it is is itself evidence for the non-closed-form nature of evolutionary learning.
I've thought for some time that the slow down in "fundamental invention" that some have observed since roughly the late 1960s to early 1970s is the result of "scientific fundamentalism" and Skepticism. Look into the backgrounds and thoughts of people like Einstein, Tesla, Engelbart, Turing, Edison, or Schrodinger, and you generally will not find them to be fundamentalist-positivist Skeptics.
It seems like the general intellectual trend from roughly 1970 until maybe 2010 or so was the rise of fundamentalism of every kind, both religious and secular... maybe due to an emotional desire for the comfort of absolute certainty in the face of rapid dislocating change.
There also seems to be an economic drive to commoditize humans. If learning can be completely systematized, then science can be rendered into an assembly line process that can be run by bureaucracies, scaled as needed, and in which individual workers can be treated as a 'human resource' commodity. Bureaucracies cannot deal with multi-modality, unpredictable and eccentric 'genius,' etc., so to admit that these things are required for the progress of science is to admit that bureaucracies are inherently limited.
Of course this being startup central, we all know this. If learning could be systematized and bureaucratized, there would be no startups. Big companies, VC funds, and banks would just execute whatever deterministic steps are required to yield progress and maintain 100% ownership of everything.