On Fri, Feb 9, 2018 at 6:28 AM, Bruno Marchal <marc...@ulb.ac.be> wrote:

​> ​
> You might try to give at least one example of hard emergence


​
One molecule of water can't be wet but 6.02*10^ 23 molecules can be. And
H2O at 31 degrees F has none of the properties of a liquid but at 33
degrees F those same molecules have all the properties of a liquid;
although usually emergent properties don't appear as
​ ​
suddenly as that, it is more smooth and continuous. Day is very different
from night but there isn't an exact point where one turns into the other.
There is nothing mysterious
​or​
 miraculous going on its just that human language puts concepts into groups
called "words" but the real world is messy
​ ​
so
​ ​
there are often intermediate
​ ​
cases where its not clear what the correct word should be; an
​ ​
80 pound man is clearly thin
​​
and a 800 pound man is clearly fat but there are values between those
extremes where reasonable people can differ on what the correct word should
be.

​ ​
John K Clark

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