In addition to being able to digitally represent analog signals, there's also such a thing as analog computation, including electronic analog computation: https

In addition to being able to digitally represent analog signals, there's also such a thing as analog computation, including electronic analog computation: https://en.wikipedia.org/wiki/Analog_computer#Electronic_analog_computers https://en.wikipedia.org/wiki/Analog_computer#Electronic_ana... So if the brain is an analog computer, then it seems reasonable to believe that we might be able to someday construct an equivalent analog computer (or a digital equivalent thereof).