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"Space is blue and birds fly through it"
Carlo Rovelli
Quantum mechanics is not about 'quantum states': it is about values of physical variables. I give a short fresh presentation and update on the perspective on the theor…
Meaning = Information + Evolution
Carlo Rovelli
Notions like meaning, signal, intentionality, are difficult to relate to a physical word. I study a purely physical definition of "meaningful information", from which these notions…
The dangers of non-empirical confirmation
Carlo Rovelli
In the book "String Theory and the Scientific Method", Richard Dawid describes a few of the many non-empirical arguments that motivate theoretical physicists' confidence in a theor…
Is Time's Arrow Perspectival?
Carlo Rovelli
We observe entropy decrease towards the past. Does this imply that in the past the world was in a non-generic microstate? I point out an alternative. The subsystem to which we belo…
Aristotle's Physics: a Physicist's Look
Carlo Rovelli
I show that Aristotelian physics is a correct and non-intuitive approximation of Newtonian physics in the suitable domain (motion in fluids), in the same technical sense in which N…