Wow, certainly is a step towards a new form of technology.
But I always assumed we'd eventually have biological computers, because the current ones are already reaching their limits.
I do not believe creating a computer from brain cells requires an ethical debate. All they do is slow technology, for the wrong reasons. Just use common sense and it should be fine.
It could be a step to true AI however, which would be interesting.
More than likely, just imagine becoming truely immortal. Once your body dies, your brain is restored with similar technology. You now gian full use of your brain, and are forever forever preserved by artificial methods.
Total Annhiliation anybody...? Dune - Butlerian Jihad?
The scary part I find is the comment that it repairs itself if a neuron dies, it just grows a new one.
Surely that could lead to the growth of new cells etc. Your computer could literally age, and grow wiser. Spooky.