When I profiled Princeton nano guru Stephen Chou a few months ago, I said he had a shrewd business sense.

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The last time I discussed the Nano factory situation with Mr. Tata, he erupted in frustration. (This was in 2007, during the course of research for my book.) "If you want to do something for the farmer, then please DO something for the farmer!"

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But at least, as a self-publisher with sales at a nano scale, I have the option of withdrawing completely from Amazon without any real loss of income.

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"I found out about nanotubes and then I came across some MIT research into nano-manufacturing, " he explained.

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But I'm not saying we will never be in the Nano.

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If the old prof were still alive, I suspect he would be on the board of one or two nano startups.

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Meanwhile, the Nano has gotten a touchscreen -- pretty much the last thing I want to operate with sweaty fingers while running.

ENGADGET: IRL: Nexus One, Sansa Clip Zip, DeLorme PN-60 and the HP TouchPad