The speaker expects humans to remain unable to understand many things, noting that people already fail to understand many aspects of how the world works and how things are made.

“I mean, there will be many things that we just will fail to understand. And to some extent, there are many things today that...”

“people don't understand about how the world works and how certain things are made and and then you know how important is it for us to have access or in principle be able to access those considerations and”