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> There is no reason that human beings cannot live forever.

There are plenty of fundamental reasons for why we can't.

> Gompertz Law is not a law of physics, but a law of observation (...)

Second law of thermodynamics.



From wikipedia:

"The second law is an empirically validated postulate of thermodynamics" [1]

And

"Empirical evidence (also empirical data, sense experience, empirical knowledge, or the a posteriori) is a source of knowledge acquired by means of observation" [2]

So, it is a law by observation after all.

[1] http://en.wikipedia.org/wiki/Second_law_of_thermodynamics

[2] http://en.wikipedia.org/wiki/Empirical_evidence


By that definition all laws of physics are laws of observation.




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