> Making custom viruses is never going to be an easy task even if you had a magic machine that could explain the effects of adding any chemical to the mix. You still need to procure the chemicals and work with them in very careful ways, often for a long time, in a highly controlled environment. It's still biology lab work, even if you know exactly what you have to do.

You appear to be talking about today. I am referring to some point in the future.

If you extrapolate our technological progress out to the future, it certainly seems possible, at some point.