So are you saying now that the original idea of having the nano equivalent of a seed or something larger than a desktop nanofactory to create large scale artifacts like cars, jets, spacecraft etc isnt feasible?

Will things that big have to be assembled in normal style factories from nanofactured building blocks?

What about buildings?

If nature can build a giant tree from a seed why couldnt we eventually do something similar? Just in terms of using nanofacturing to take the artifact all the way from beginning to completion no matter how large it is.

Also is the concept still looking feasible that nanofactured artifacts can be artificially intelligent and alive in the sense of models developed in the field of artificial life?