Comment by red75prime

Don't worry. It would be hard to miss.

But, seriously, while it's not an easy task (otherwise we'd have seen it done already), it doesn't seem to be a kind of task that requires a paradigm shift or some fundamental discovery. It's a search in the space of network architectures.

Of course, we are talking about something that hasn't been invented yet, so I can't provide ironclad arguments like with, say, fusion power where we know what to do and it's just hard to do.

There is circumstantial evidence though. Complex problem solving skills that evolved in different groups of species: homo, corvidae, octopoda. Which points at either existence of multiple solutions to the problem of intelligence or at not that high complexity of a solution.

Anyway, with all the resources that are put into the development of AI will see the results (one way or another) soon enough. If long-term memory is not incorporated into AIs in about 5 years, then I'm wrong and it's indeed likely to be a fundamental problem with the current approach.