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That the wheeled bag was created by a Northwest pilot, 22 years ago?
http://www.theage.com.au/travel/travel-new...90923-g133.html
Aside from that interesting fact, the article also links to an interesting site I didn't know about: Luggage Limits. Apparently it lists applicable luggage limits for each airline, and breaks if down based on flight number (example regional aircraft sometimes have lower limits etc.).
http://www.luggagelimits.com/
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Reminds me of a quote I heard (well, I don't remember the exact words well enough to quote it precisely, but the idea is still there. I guess if anything, I can change it for accuracy.
It took 18 years after landing on the moon that someone decided that adding wheels to luggage would be a good idea.
