He starts with a circle representing all of human knowledge.
Then shows how each successive level of education brings your closer to the boundary.
Until, finally, you make a dent.
I love this illustration. For me, it clearly depicts how each piece of academic work seems tiny in the grand scheme of things, but contributes to a larger goal.
But there is more than one way to push that boundary. One way, is to take the long, slow hike to the edge and dip a toe over. The other is take a giant leap of assumption. That is what some startups do.
The leap of assumption is inherently risky. There is a very real risk that you won’t land on solid ground. And because, unlike the PhD, you didn’t build a bridge for yourself back to the mainland of human-knowledge, you might find yourself adrift without a paddle.
But there is a chance that you might actually get lucky and find something out there.
Keep pushing. Keep leaping.