Earlier quoted context omitted.
The manhattan project wasn't incremental. Nor was the apollo program nor the hoover dam. It does seem like we (America) have moved into a mode of thinking where instead of asking, "what do we want to build?" we ask, "based on the advances at the edge of iterative academic or technical progress, what is now possible to build?" In short, Thiel's argument that America has mostly transitioned from optimistic determinists…
Manhattan project, over half a million people working in cooperation to meet one end goal. The Apollo program, over half a million people working in cooperation to meet one end goal. How many people do Google, Apple, Microsoft, Oracle employ? Combined ? A single individual with a computer can be more productive than 100 individuals from any of those past projects. We walk around with more computer power in our pocket…
But we do have such projects that organize huge amounts of people(although the details of this organization differ - because it appears that networks of companies works better).
Curing cancer,green energy and keeping moore's law can be seen as such projects.