Message | George,
In regards to you recent Scientific American article (Sept. 2015) “Is the Cosmos Random”: It was a breath of fresh air to read such a brilliant article on the behavior of systems at various “levels”. The argument that quantum effects explain the behavior of macro-states, planets, volcanoes, Giraffes, people has always been absurd to me. I have argued for years with scientists that the physics of a system is a matter of scale. Here you use the terminology of “levels”. For instance: Quantum mechanics explains the physics at the atomic scale. Newtonian mechanics explains physics at the macro level. General Relativity explains physics at the massive, and largest of scales – the expanding universe. There is even a correspondence principle between atomic and macro states and Einstein always constrained the physics of general relativity to Newtonian mechanics in the limit of small mass/slow speeds. Which means that yes, there is a thread of physics that connects all phenomena but there is no “unifying theory” or “theory of everything” that will ever explain all physical phenomena at all scales. And your concluding statement: “Our body and brain are little multiverses, and it is the multiplicity of possibility that endows us with freedom” is a powerful and meaningful statement on many levels . Thanks. Paul Sherard University of Hawaii |