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Old Sep 30th 2017, 07:58 AM   #1
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Why does Entropy always increase?

Answer: If there's one right way to put something together, there are many wrong ways to do it. For example, if you pick up all the pieces of a jigsaw puzzle that you accidentally dropped on the floor and quickly put them right side up on the table, you don't expect the puzzle to be put together the right way. There is only one correct way to put the pieces together and very many incorrect ways.
Chances are you won't put them together the right way the first time.

But if this is the case then there are a few ways by which things are put in order. Suppose you take a jigsaw puzzle and randomly just put it together without looking and luckily it turns out that you have solved the jigsaw puzzle then entropy has decreased. Does this mean entropy can sometimes decrease? If there are a few ways of putting something in order then there are chances that entropy decreases.

Suppose you want to arrange your sofa and you have a few options and when you arrange the sofa in the right way you have decreased the entropy. So does that mean entropy can decrease?
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Old Sep 30th 2017, 09:40 AM   #2
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See my reply to your zigsaw puzzle question.

We can work it all out there.
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  Physics Help Forum > High School and Pre-University Physics Help > Thermodynamics and Fluid Mechanics

entropy, increase

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