What exactly is the nature of “chance.” We use the word constantly and grasp its meaning, or so we think, but what exactly is it? Have philosophers or scientists ever tackled and described in depth what is meant when we say an event happened by chance rather than by necessity?
Your thoughts?
The mathematics of probability and statistics is a relatively recent development. Geometry and arithmetic, by way of contrast, go back at least two or three millennia.
Probability and statistics came about from the desires of gamblers to beat the odds when gambling. Gambling is old, but the disciplined study of it known as probability is relatively new, dating from about the middle of the 1600s.
Randomness is closely associated with probability. A long sequence of truly random numbers is one which is algorithmically incompressible, that is, there are no mathematical algorithms capable of yielding a shorter expression than the sequence itself.
In quantum mechanics, mathematical waveforms can come about as solutions of the Schrödinger equation. The eigenvalues of the solutions are the physical observables, things such as momentum, energy, frequency, etc. Those have always been considered to be things that can be detected by instruments and measured, and thus things that are real. The eigenvectors or eigenfunctions are known as representations. They give us pictures of where electrons are in space and time, but with a few experimental exceptions are generally thought of as unreal, something that helps us visualize things but something which we do not ultimately know with our senses.
Eigenvalues, observables, are always supposed to be integer values of physical quantities. Eigenvectors and eigenfunctions, representations, are either complementary complex valued vectors or the square roots of probability distributions in space. If you find the norm of the inner product of the eigenvectors, or if you take the integral of the product of the complementary eigenfunctions, you should always come up with the number one for a particle that actually exists.
Chaos theory deals with closely related sprays of trajectories associated with “the butterfly effect”. Since sprays of trajectories are inherently intractable, they are often re-expressed as fractal distributions in phase space.
Chaos theory deals with macroscopic objects, quantum theory with microscopic or nanoscopic objects. I cannot do justice to such topics in this post. You should look upon my post as more or less realistic physics babble full of words the meaning of which, if you do not understand them but google them, will help you to begin building a vocabulary which will enable you to begin grasping these topics.