They were referring to present time, not a hypothetical future of more complete explanations of nature and more powerful human brains for conceiving and storing

They were referring to present time, not a hypothetical future of more complete explanations of nature and more powerful human brains for conceiving and storing them. That said, there is a reason why it may not be possible: human consciousness can only exist at a higher level than the most fundamental level of nature, and on that basis, consciousness may never be able to perceive enough of the fundamentals of nature to be able to formulate a complete explanation of it. However it's not really relevant to the topic at hand. I'm sure humans will always use cognitive shortcuts like ideologies in order to navigate our daily experience, for reasons of speed and efficiency.