by venturebeat.com — Louis Rosenberg, Ph.D — Many “futurists” insist that technological advances will enable humans to “upload our minds” into computer systems, thereby allowing us to “live forever,” defying our biological limitations. This concept is deeply flawed but has gained popular attention in recent years. So much so, Amazon has a TV series based on the premise called Upload, not to mention countless other pop-culture references. As background, the concept of “mind uploading” is rooted in the very reasonable premise that the human brain, like any system that obeys the laws of physics, can be modeled in software if sufficient computing power is devoted to the problem. To be clear, mind-uploading is not about modeling human brains in the abstract, but modeling specific people, their unique minds represented in such detail that every neuron is accurately simulated, including the massive tangle of connections among them.
Is it even possible?
Of course, this is an extremely challenging task. There are more than 85 billion neurons in your brain, each with thousands of links to other neurons. That’s around 100 trillion connections – a thousand times more than the number of stars in the Milky Way. It’s those trillions of connections that make you who you are – your personality and memories, your fears and skills and ambitions. To reproduce your mind in software (sometimes called an infomorph), a computer system would need to precisely simulate the vast majority of those connections down to their most subtle interactions. That level of modeling will not be done by hand. Futurists who believe in “mind uploading” often envision an automated process using some kind of super-charged MRI machine, that captures the biology down to the molecular level. They further envision the use of artificial intelligence (AI) software to turn that detailed scan into a simulation of each unique neuron and its thousands of connections to other neurons.