An informative piece – How Quantum Mechanics Could Be
Even Weirder by Philip Ball
“Why doesn’t the
world make sense? At the fundamental level of atoms and subatomic particles,
the familiar “classical” physics that accounts for how objects move around
gives way to quantum physics, with new rules that defy intuition. Traditionally
these are expressed as paradoxes: particles that can be in two places at once,
cats that are simultaneously alive and dead, apparently impossible
faster-than-light signaling between distant particles. But quantum rules are
perfectly logical and consistent—the “paradoxes” are the result of our trying
to impose on them the everyday reasoning of classical physics.
What’s more, over
the past several decades we’ve come to understand that the classical and
quantum worlds don’t exactly operate by “different” rules. Rather, the
classical world emerges from the quantum in a comprehensible way: you might say
that classical physics is simply what quantum physics looks like at the human
scale.”