On: Researchers are building computers that run on brain organoids - but have...

The notion of building calculating machines from living tissue, from brain matter grown in a vessel, is a curious one. My initial thought is not of the ethical quandaries, for those are the domain of the priests and the lawyers, but of the mechanics. How does one transmit an impulse, a thought, from a structure of cells to a mechanism of copper and glass? The electrical spark, yes, but the meaning of that spark?

A brain, even a small one, is a complex hydraulic system, a network of channels and gates, where pressure and flow dictate function. To connect this to a rigid, binary system of on and off, 0 and 1, seems like trying to force a river into a series of sharp-angled canals. The river will find its own path, or it will flood.

And what of the input and output? If this organoid can “compute,” what precisely is it computing? Is it merely a more efficient switch, or does it possess a nascent form of judgment? The article speaks of “neglected ethical issues,” which suggests the builders are focused solely on the how and not the what. This is like designing a magnificent siege engine without considering what city it will be used to breach.

I have not yet determined whether such a system, if it truly functions as a computational engine, would require the same nourishment, the same delicate balance of humors, as a living mind. Nor do I understand how one would measure its “intelligence” or its “suffering.” These are not quantities easily reduced to numbers on a dial. The question remains: is this a new form of life, or merely a very wet machine?