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The bottleneck might be the air in the room
(blog.mikebowler.ca)
This is a most excellent place for technology news and articles.
Not an average person no, but the article seems to be aimed more at the people running businesses - and I think more in terms of the value of all of the people crammed into your conference room slowly losing it to CO2 concentrations.
*If you get 10-20 people together in a room, I really hope they are costing the company more than $300 an hour.