>> I would have thought some company would come up with the idea for a 
>> cellphone, patent it, and have the entire world market to themselves, 
> 
> Why would you think that didn't happen? Cell phones have been around for 
> 50 years or so.
> 
> Patents expire, you know.

AFAIK, digital technology hasn't been around for 50 years, and an 
analogue cell phone wouldn't be much use... I had assumed that's why 
they exist now.

(OOC, does anybody know how long electricity has been around? I thought 
it was comparatively new.)

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