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That's exactly it. And if something like this happens, Google's ad model is pretty much toast. That would be bad news for them in general.

If thinking about a programming question, just landed me on a StackOverflow page, even that would be miles ahead of Google search's offering!

I don't want to think about such a future... One also wouldn't need to commit any crimes to summon the attention law enforcement, either. Perhaps it will be more automated though--the earpiece could double as Harrison-Bergeron-type equipment, rendering you miserable and meek if you step--no think--out of line.