You use your penis to stimulate your penis??

I don't really follow... saying X is like Y is the same as saying Y is like X.

Not trying to be argumentative, but I honestly don't see how time differs in that regard. Something like mass is a fairly abstruse concept really. Good evidence for this is the fact it took thousands of years for humans to even notice that mass (n.b. not weight or extension or other related concepts) was actually a…

You make the question sound like a rather trivial "yes". As far as I can tell, if by "exist" one simply means "stuff like mass, length, etcetera", then time surely exists; there is no clear, special distinction between time and those other quantities which would give cause for suspicion so that we'd consider making an…

Not sure what you're getting at. You can conceptualise as any observation as "a measurement"; doesn't mean it's not "a thing", whatever that means.

Do you have any examples? In any case, lots of nonsensical questions are of course just nonsensical questions, and checking for well-defined terms is one way to detect them. "Is this a thing", without any clear concept of how "thing" is being used, is not a meaningful question.

Not sure if you're joking, but that's not an explanation and bears no resemblance to accepted theories of physics.

I'm confused, you linked to a pop-sci book about a fringe opinion as if it's a definitive consensus.

It does, because it means your question is ill-formed in the first place. If you can't articulate what the difference would be, then essentially you don't even know what your own question is.

Pretty sure that violates fire safety. And false imprisonment laws.

I don't think that question's meaningful. It's certainly not scientific. For it to be scientific you would have to be able to answer the question: how would the world look different if time was or wasn't "a thing"? Can you?

The assumption is simply that the aliens have a desire to multiply. Once you grant that, you grant that the aliens will quickly reach carrying capacity; every species on Earth does this. Reaching carrying capacity necessitates using most of a sun's energy, and not letting it escape into the cosmos.

It's a physical fact that you can't contain all of the energy. Ultimately it always gets converted into useless forms and escapes.

I don't get it. You say the galaxies of K3 civilisations will only emit infrared light. But this study just checked the galaxies which emit visible light. So necessarily it's not looking at the right thing. Instead, the entire sky would need to be searched for infrared objects, not in the visible spectrum.

I'm already sick of those films. Most of them are incredibly formulaic and bland.

The numbers are pretty small if you work 'em out actually, only a few million. And mathematicians are a lot simpler than you give them credit for: the only reason mathematicians ever thought it was true for all numbers is that they tried a whole bunch of guesses and they all worked.

Lemon dildo..?

Or "We apologise for the inconvenience".

The two greatest physicists in history in one video, amazing!

You should understand all the mathematics involved; it's limited to addition and multiplication (the little 5 just means multiplied by itself 5 times).