Of course it can't happen. As the Germans discussed at Farm Hall, you'd need giant factories, maybe the biggest buildings in the world, more than a mile long. They'd need giant power plants, like big hydroelectric dams, to power them. You'd need entire cities of scientists just to work out the theory. Other new cities for the plants. It would take hundreds or thousands of test explosions to get the chemical explosive components right. You'd need some way to watch an explosion as it happened, maybe even with an X-ray machine. The project would cost billions of dollars and take years. Even then, you might only make a few bombs.
Just one of those facilities, the Clinton Engineer Works, employed nearly a hundred thousand people. The vast majority of those did not realize what they were a part of. For example, this quote underneath one of the article photos:
"Gladys Owens, the woman seated in the foreground, did not know what she had been involved with until seeing this photo in a public tour of the facility fifty years later."
