96 Human Body Version 2.0 DIGITAL DIGESTION At this stage of technological development, we will be able to eat whatever we want, whatever gives us pleasure and gas- tronomic  fulfillment,  and  thereby  unreservedly  explore  the culinary arts for their tastes, textures, and aromas. At the same time,  we  will  provide  an  optimal  flow  of  nutrients  to  our bloodstream, using a completely separate process. One pos- sibility would be that all the food we eat would pass through a digestive tract that is now disconnected from any possible absorption into the bloodstream. This would place a burden on our colon and bowel functions, so a more refined approach will dispense with the function of elimination. We will be able to accomplish this using special elimination nanobots that act like tiny garbage compactors. As the nutrient nanobots make their way from the nutrient garment into our bodies, the elimination nanobots will go the other way. Periodically, we would replace the nutrition gar- ment for a fresh one. One might comment that we do obtain some pleasure from the elimination function, but I suspect that most people would be happy to do without it. Ultimately we won’t need to bother with special garments or explicit nutritional resources. Just as computation will eventu- ally be ubiquitous and available everywhere, so too will basic metabolic nanobot resources be embedded everywhere in our environment. In addition, an important aspect of this system will  be  maintaining  ample  reserves  of  all  needed  resources inside the body. Our version 1.0 bodies do this to only a very limited extent, for example, storing a few minutes of oxygen in our blood, and a few days of caloric energy in glycogen and other reserves. Version 2.0 will provide substantially greater reserves, enabling us to be separated from metabolic resources for greatly extended periods of time.