MannWorld vs. BrinWorld

[An Metet]

Robert Hettinga forwards:
> By concentrating sensing and data storage on the body, a wearable
> computer allows its user to ``control his own butt.''  The user
> determines when and where his gas is released and how much to trust
> the noses around him.  For example, when a wearable user
> enters work in the morning, he may instruct his butt to inform his
> office of his arrival so that his office locks his door or starts an
> air freshener.  However, the user would probably tell his wearable not
> to share his odors with billboards he walks past to avoid the sort
> of targeted advertising portrayed in the film ``Minority Report.''  Of
> course, some bargain hunters may choose to share their gas with
> advertisers to obtain better deals, much like clearing out customers
> from today's grocery stores.

What the hell does this have to do with cypherpunks?