# Really stupid question about either physics, math or philosophy...

**URL:** <https://boards.straightdope.com/t/really-stupid-question-about-either-physics-math-or-philosophy/389841>\
**Category:** Factual Questions\
**Created:** [January 28, 2007, 4:21pm UTC](https://boards.straightdope.com/t/really-stupid-question-about-either-physics-math-or-philosophy/389841 "2007-01-28T16:21:55Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![Zebra](https://avatars.discourse-cdn.com/v4/letter/z/c0e974/32.png) [@Zebra](https://boards.straightdope.com/u/Zebra)\
**Post date:** [January 31, 2007, 1:25am UTC](https://boards.straightdope.com/t/really-stupid-question-about-either-physics-math-or-philosophy/389841/21 "2007-01-31T01:25:09Z")

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[QUOTE=Sapo]  
I have a comment about them pigeons. Is this the place to post it?

Jetliners do have a big open window during flight. The cabin is pressurized but not airtight. So I guess flying pigeons would decrease the weight of the plane.

Will this reach the almighty ears, or do I need to post this elsewhere?  
[/QUOTE]

It should go in “Comments” forum.

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**Author:** ![Zebra](https://avatars.discourse-cdn.com/v4/letter/z/c0e974/32.png) [@Zebra](https://boards.straightdope.com/u/Zebra)\
**Post date:** [January 31, 2007, 1:26am UTC](https://boards.straightdope.com/t/really-stupid-question-about-either-physics-math-or-philosophy/389841/22 "2007-01-31T01:26:29Z")

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Basically the pack can not be held twice. It should not be counted twice. One pack, held by one person, only counts as one.

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**Author:** ![spingears](https://avatars.discourse-cdn.com/v4/letter/s/ebca7d/32.png) [@spingears](https://boards.straightdope.com/u/spingears)\
**Post date:** [January 31, 2007, 2:11am UTC](https://boards.straightdope.com/t/really-stupid-question-about-either-physics-math-or-philosophy/389841/23 "2007-01-31T02:11:16Z")

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[QUOTE=WhyNot]  
Situation: I have a 20 pound toddler. She has a 2 pound backpack. If she wears the backpack, she’s bearing a load of 2 pounds, right? If I then pick her up, I’m bearing 22 pounds (20 pound kidlet + 2 pound backpack), so altogether we’re carrying 24 pounds. But, of course, we aren’t. So “where” did the “extra” 2 pounds come from,  
[/QUOTE]  
It did NOT come from anywhere nor somewhere!

Surely Shirlery (aka WhyNot) you jest!  
At your age you must be “Winding us up.”

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