This corresponds to the limits of combining symbolic and connectionist approaches, where it's impossible to create an ontology of the whole world and it's impossible to automatically generate all the explicit concepts we need for reasoning.

I suspect there is a Heisenberg-like law that limits how explicit concepts can be and how many can be used.

A big part of intelligence is based on emotions and feelings, which are an underestimated part of true intelligence. And that’s a tricky thing to understand and evaluate, it involves a subject, a living individual, not easily reduced to an experimental object, dealing with complex situations