[BenLurkin]

ping

[BipolarBob]

Yeah, and a particle can be in two places at the same time. My energy level is higher when I’m dead than when I’m alive. There is no such thing as free will. I could go on and on with the insane asylum quantam mechanics.

[ModelBreaker]

“Nobody understands quantum mechanics”

Being able to solve quantum field equations says nothing about having an intuitive understanding of what they actually mean.

It’s very different from understanding Newton’s laws of motion. You can get an intuitive understanding of even the non-intuitive parts (even though when I was young, I thought rockets had to push against the atmosphere).

[SaveFerris]

Shoot I refuse to even watch the Quantum Leap remake

Same with the ‘new’ Magnum PI

[pepsi_junkie]

4. Nobody understands quantum mechanics We understand it extremely well, to a point where we can predict quantum phenomena with high precision, simulate highly complex quantum systems, and even start to build quantum computers.

If you say so but I'm still uncertain.

[minnesota_bound]

I watch Star Trek to get my explanations.

[LegendHasIt]

You’d be shocked how rarely I get tangled up in these, (or any) Quantum Mechanics misconceptions.

[Bullish]

You’d know pretty darn quick the cat didn’t survive the box test once the box started stinking.

[thepoodlebites]

φ = 1/√2(| alive> + | dead>), a superposition of simultaneous states.
Consider observation a = < alive|,
aφ = (< alive|)1/√2(| alive> + | dead>),
square the wave function to obtain the physical realizable: φ†aφ,
where φ† is the adjoint of φ, the complex conjugate of the transpose.
a/2[(< alive + < dead|)•(| alive> + | dead>)] (use FOIL method) where,
< alive|alive> and < dead|dead> = 1; < alive|dead> + < dead|alive> = 0.
φ†aφ = φ†φa†, the cat is |alive>. QED

That’s a crazy cat, 天哪 (sacred manure).

[metmom]

Trust me, I won’t be losing any sleep over it.

[norwaypinesavage]

There is measurement, and then there's "measurement".

I can measure the speed of a race car in the Indie 500 with a stopwatch while watching the race on TV, knowing only the circumference of the track. There is absolutely no way that my measurement influences the race outcome.

On the other hand, multi-trillion atom me, can't measure the speed of a single electron whizzing around a hydrogen nucleus, or a photon wiggling its wave through a double slit, without disrupting it.

The difference, of course, is the definition of 'measurement'. "Measuring" the quantum state of anything by humans will be disruptive using current technology. The problem is the use of common words like "measurement" meaning totally different actions.

[wideminded]

4. Nobody understands quantum mechanics

We understand it extremely well, ..."

"Turning to quantum mechanics, we know immediately that here we get only the ability, apparently, to predict probabilities. Might I say immediately, so that you know where I really intend to go, that we always have had (secret, secret, close.the doors!) we always have had a great deal of difficulty in understanding the world view that quantum mechanics represents. At least I do, because I'm an old enough man that I haven't got to the point that this stuff is obvious to me. Okay, I still get nervous with it. And therefore, some of the younger students ... you know how it always is, every new idea, it takes a generation or two until it becomes obvious that there's no real problem. It has not yet become obvious to me that there's no real problem. I cannot define the real problem, therefore I suspect there's no real problem, but I'm not sure there's no real problem."

- Richard Feynman, 1981