Merely simulators and modelers for life. The mapping of the human genome is already underway. Legal obstacles to copyrighting living animals and organic substances are falling daily. You cannot replace a rain forest with an oxygen-manufacturing factory. You cannot mop up spilled hydrocarbons and PCB's, but you can degrade them organically.
Humans are greedy for life-extension.
Any promising developments in this direction will soon snowball. One of the prime purposes of nanotechnology is bodily repairs, augmentations and modifications. There are over a hundred naturally occurring neurotransmitters, and we only have a rudimentary idea of what a few of them do. In the style. Ribofunk must be as sensual as sex, as unsparing in sweat, cum, bile and lymph as the the body is prolific in these substances.