A lot of the obvious questions on the table were answered, even without an answer we at least have the question. Today true, groundbreaking innovation needs som

A lot of the obvious questions on the table were answered, even without an answer we at least have the question. Today true, groundbreaking innovation needs someone to identify the new questions. It's like doing science in a bubble and you need someone to take a massive new one and merge it into our own. Right now we're not opening wide doors, but just refining and adding almost imperceptibly to an already huge bubble. We're grinding in the game because we can't find the boss on the map or can't beat it yet. Besides the current structure of research and the known weaknesses (misaligned incentives, funding issues, etc.) science in general today ran out of low hanging fruit. The last unexplored or unanswered riddles may need prerequisites that are outside of the current boundaries so someone needs to open the door do a vast new bubble that has more relatively low hanging fruit. Also humans probably (don't quote me on that :) ) can't come up with any new questions or answers unless they are already at the edge of that bubble. And they each see and understand a smaller patch of that surface as it expanded. Stumbling onto new thinks is exponentially harder. This is what those revolutionary discoveries did for us in the past: Opened the door to a new world where the hard answers were suddenly a bit easier, they made sense.