I see a lot of comments saying "this happened in the past, and the new technologies never made the humans useless". Well, maybe a good way to state the current problem is the following: the aim of this new technology is to produce <i>humans</i>. A potentially infinite amount of them. Running on electricity instead of food. Needing the space of a box. Without the need to sleep, socialize, furnish their apartments, look for love and raise kids. <i>If</i> the technology is actually possible, there simply can't be any space left for old style, flesh and blood humans in the economy.