I think it won’t be easy to modify the genome of individuals to achieve predictable outcomes even if you get the machinery you describe to work.
Is this because of factors like the almost-infinite number of interactions between different genes, such that even with a hypothetical magic technology to arbitrarily and perfectly change the DNA in every cell in the body, it wouldn’t be possible to predict the outcome of such a change? Or is it because you don’t think that any machinery will ever be precise enough to make this work well enough? Or some other issue entirely?
Is this because of factors like the almost-infinite number of interactions between different genes, such that even with a hypothetical magic technology to arbitrarily and perfectly change the DNA in every cell in the body, it wouldn’t be possible to predict the outcome of such a change? Or is it because you don’t think that any machinery will ever be precise enough to make this work well enough? Or some other issue entirely?
Yes. :-)