But that was with the technology available in 1940. I would imagine that this has become vastly simpler and cheaper since then. What used to take rooms full of

But that was with the technology available in 1940. I would imagine that this has become vastly simpler and cheaper since then. What used to take rooms full of people with slide rules or state-of-the-art supercomputers can now be calculated on a Raspberry Pi in seconds. ABEC 9 ball bearings are disposable consumer goods that you can order by the 20-pack for $10. CNC machines went from non-existent to affordable by hobbyist groups. Likewise, knowledge that used to be a state secret is now available in high school text books. I can't imagine a Manhattan Project requiring anywhere near that amount of people and resources nowadays.