> I also know that in order to make any meaningful link between a human mind and a computer one must record the identified firing of at least 5 billion neurons

> I also know that in order to make any meaningful link between a human mind and a computer one must record the identified firing of at least 5 billion neurons from the "mind-generating" association cortex in behavioral and environmental contexts Wrong. I'm no brain scientist, but this fungus [1] shows the way. If the scope of the device is sufficiently constrained it wouldn't need to interact with 5 billion neurons. > They did not show how their robot-controlled microelectrodes actually penetrate into the cortex and find cells -- because, as every single-cell recording expert knows, this is the difficulty (below) If the difficulty lies in actually embedding the implants, then a biological solution such as this fungus should be used, with the work being done to genetically engineer it to make it programmable through a device. Just mail me my royalties. [1] https://www.theatlantic.com/science/archive/2017/11/how-the-zombie-fungus-takes-over-ants-bodies-to-control-their-minds/545864/ https://www.theatlantic.com/science/archive/2017/11/how-the-...