Scientists are now making computers out of human brains, but is it ethical?
The human brain is an incredibly powerful and efficient computer, and scientists are exploring ways to replicate its capabilities in machines. While many researchers are focused on creating artificial intelligence and robotics, a smaller group is experimenting with something even more intriguing: using human tissue to build computers.
It might sound like something out of a sci-fi movie, but it’s not just a theoretical concept. A Swiss company and several academic research labs worldwide have already created biocomputers, or ‘human brain organoids’, which are clusters of artificially grown cells that mimic the structure and function of the human brain. These organoids are designed to take on a specific shape, including neurons and cells found in the human brain and nervous system.
But how do these organoids become computers? When an electrical pulse is passed through the cells, it triggers an electrical signal, which can be interpreted by algorithms. This allows users to communicate with the ‘brain blobs’ and transform their output into legible information. In theory, this could lead to the development of more complex computer systems.
You might be wondering, does this mean tech billionaires are harvesting human brains? Not exactly. Researchers use stem cells, which can be reprogrammed to become various cell types, to create neurons and other necessary cells. This approach ensures that no actual human brains are involved.
However, the parallels with the human brain are crucial. To handle complex processes, organoids need to ‘learn’ like humans do. This can be achieved by delivering chemicals like dopamine to encourage specific responses or using electrical signals to teach the organoids to perform tasks. For instance, scientists taught a ‘mini brain’ of 800,000 neurons to play the classic video game Pong.
The reach of these biocomputers is impressive, as they can be accessed remotely via the internet, allowing researchers worldwide to collaborate. A few academic groups have been granted free access, and private companies or individuals can also gain exclusive access for a monthly fee.
But are these biocomputers truly better than traditional computers? FinalSpark, the Swiss company, claims they are one billion times more energy-efficient, a bold statement. However, researchers are cautious, referring to their experiments as ‘proof of concept’ rather than a practical solution. The current systems are considered ‘totally useless from a practical perspective’ by some, but there’s hope for a future where biology and technology merge seamlessly.
As we explore this fascinating field, it’s essential to consider the ethical implications, especially when combining these technologies with AI. While it might not be a brain in a jar on your desk anytime soon, the potential for human-like minds raises ethical concerns. It’s a complex and intriguing area of research, and we’re only beginning to understand its possibilities and challenges.