No, it isn’t. Whilst a lot of work remains to be done for really commercially successful quantum computers (and probably a couple of decades), we’ve had experim

No, it isn’t. Whilst a lot of work remains to be done for really commercially successful quantum computers (and probably a couple of decades), we’ve had experimental devices that can be used for research and development since the late 1990s. We are currently where computing was in the 1900s: critical innovations like transistors and ICs have not happened yet, but the concept of computers is much older than that, with examples such as Babbage’s analytical engine or Pascal’s calculator.