Since the natural seed provides a wide variety of edible products at an extremely low cost per unit and is manufactures very efficiently using renewable energy why try to compete? Any manufactures product, human or otherwise produces many rejects so devising a totally new way to replace a very usable proven system seems to me to be not a worthwhile effort.

We can achieve your goal using genetic engineering. I thought at first that you were going to suggest engineering plants that could perform intended building jobs. For example, you could have seeds that, when planted, would grow into trees shaped like houses that people could live in. This is theoretically possible. I didn't come up with this idea myself, I read it in a sci-fi novel many years ago.

Well, i know that seeds are cheap and easy. But im talking about using them in harsh, bad enviroments where a natural seed wont grow. Or in a polluted soil, where the natural seed would die, the computer could generate and safe guard the product in the plant. I know that the direction the plant takes as far as shape, beyond what was natures intentions, would probibly depend upon gravity and what not, but the tree house idea sounds possible. Trial and Error, but theres no reason it couldnt happen with alittle genetic engineering. We can put an ear on a mouse, we can grow a tree into a house.

But, of course, once genetic engineering becomes that simple, we have to be careful that houses don't get ideas of their own and start consuming occupants or learn to charge rent and play the market.

Once nano technologies, genetic engineering, and artificial intelligence all come together, we will have no more problems, outside of ourselves.