https://en.wikipedia.org/wiki/There%27s_Plenty_of_Room_at_the_Bottom https://en.wikipedia.org/wiki/There%27s_Plenty_of_Room_at_th... and what Drexler wrote afte

https://en.wikipedia.org/wiki/There%27s_Plenty_of_Room_at_the_Bottom https://en.wikipedia.org/wiki/There%27s_Plenty_of_Room_at_th... and what Drexler wrote after. Note: feynman challenged engineers to make an engine 1/64th of inch (cubed) and it was done in 1960 using conventional microscale tooling of the time. Also, lithography was a much more profitable approach to nanoscale than tiny machines, at least so far.