The subway use case for devices doesn’t apply to 90% of people

BREAKING: 9 out of 10 people don't actually do this
BREAKING: 9 out of 10 people don’t actually do this

I was reading about a recently announced device on Engadget when I encountered this particular nugget:

[The device is] not going to accompany you on daily subway rides.

That got me thinking: how much of the US population actually lives in cites that have subways? As it turns out, the fraction that does is actually very small: 10.5%.

I arrived at that number by first looking up which US cities are served by metro systems, then summing their populations by entering “population of CityA + population of City2 + …” into Wolfram Alpha*. I then divided that sum by the US population.

Since around 1 in 10 people have to worry about regular subway use, it’s a bit ridiculous to review a device based on that. I still await the day when technology bloggers realize the world doesn’t begin in the Bay Area, valley in Chicago, and end in New York.

On a more humorous note, with a total of 254.4 million vehicles in operation, perhaps we should evaluate devices based on a different use case:**

*Note that you’ll have to split the query into at least 2 parts to avoid running into Wolfram Alpha’s character limit. My queries were:

http://www.wolframalpha.com/input/?i=population+of+Atlanta+%2B+population+of+Boston+%2B+population+of+Baltimore+%2B+population+of+Chicago

http://www.wolframalpha.com/input/?i=Population+of+Cleveland+%2B+Population+of+Los+Angeles+%2B+Population+of+Miami+%2B+Population+of+New+York+City+%2B+Population+of+Philadelphia+

http://www.wolframalpha.com/input/?i=population+of+New+Jersey+%2B+population+of+San+Francisco+Bay+Area+%2B+population+of+Washington+DC

http://www.wolframalpha.com/input/?i=%2832.384+million%29%2FUS+popluation

**simultaneous operation of a vehicle and electronic devices is strongly recommended against

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