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neural computing

Cross Post: Tech firms are making computer chips with human cells – is it ethical?

Written by Julian Savulescu, Chris Gyngell, Tsutomu Sawai
Cross-posted with The Conversation

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Julian Savulescu, University of Oxford; Christopher Gyngell, The University of Melbourne, and Tsutomu Sawai, Hiroshima University

The year is 2030 and we are at the world’s largest tech conference, CES in Las Vegas. A crowd is gathered to watch a big tech company unveil its new smartphone. The CEO comes to the stage and announces the Nyooro, containing the most powerful processor ever seen in a phone. The Nyooro can perform an astonishing quintillion operations per second, which is a thousand times faster than smartphone models in 2020. It is also ten times more energy-efficient with a battery that lasts for ten days.

A journalist asks: “What technological advance allowed such huge performance gains?” The chief executive replies: “We created a new biological chip using lab-grown human neurons. These biological chips are better than silicon chips because they can change their internal structure, adapting to a user’s usage pattern and leading to huge gains in efficiency.”

Another journalist asks: “Aren’t there ethical concerns about computers that use human brain matter?”

Although the name and scenario are fictional, this is a question we have to confront now. In December 2021, Melbourne-based Cortical Labs grew groups of neurons (brain cells) that were incorporated into a computer chip. The resulting hybrid chip works because both brains and neurons share a common language: electricity.

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