Comment Re:The God-fearing and the Accountants (Score 1) 153
The question is... can you build a body without a brain? I'll bet you actually can't, but our victorian way of thinking about the body doesn't yet know that. What I'm getting at is that our bodies are far more interconnected than we really give them credit. Things that happen in our guts, for example, can have a profound effect on our brains - and quite likely the opposite too. I'll bet that from your head to your toes, your brain is involved in the development, maintenance and operation of all those body parts.
As you point out, our bodies aren't static either - they need to move and work in order to grow or maintain themselves. It's unclear, for example, if you could artificially grow bone that has the requisite density in all the right places to actually be usable. Our bones are subjected to vibrations from all of our movements, and that is the mechanism through which they develop. I'll bet you can't synthesise that sufficiently well (or at least, not easily). Likewise muscle growth - we'd all like to think you could just stick a few needles in and electric-shock them all the grow nicely, but attempts to do that so far have been rather lack lustre to say the least. After that, there are a whole load of things I can't even name which will need doing too. One wonders if it's ever likely to be possible?
FWIW, I suspect more likely would be to rapidly create some of the required tissue for a repair. If you get liver cancer, then they go off and make a load of your liver cells, presumably wash out the cancer and then graft them in place of the old cancerous liver cells. Once they get that working, they might be able to make an entire liver - maybe. But I suspect by the time they want to get that far, they'll either be growing the replacement liver inside another living thing, or else will have worked out if it is ever possible to build body parts without a brain being present.