StringJunky

"The gold, it's in the...".

No. it's totally wrong and he just made it up.

It's very subjective.

Better get Elon Musk on it.

It's not their turn yet to be exploited attract foreign investment.

Einstein proposed it then Gravity Probe B measured it and confirmed it. How real do you want it?

Humour, served black. Most people's interest in others goes no further than their own town... if that.

This is the way it will likely pan out, the hard way, because nobody wants to play God.

What about a fixed lifespan, a la Logan's Run, then pop them in the Carousel. Afterwards make some Soylent Green with the flash-fried remains which means they become recyclable. It won't be veal but mutton is better than nothing.

In other words: Intersubjectively real I go along with this. They do it anyway; acknowledged or not.

Can't something be defined as the 'sum of its measurable parameters? If it's not measurable it's not a scientific reality.

Yes.

Flux is not a thing though; it is a descriptive describing something that is not static in terms of change. 6 I'm not arguing that things are only models in science. I agree. The point is that spacetime is a useful model that has measurements to support it. Now, take string theory as a contrast... that is a figment of mathematical imagination.. so far.

I see what you mean but if I put a voltmeter probe to a wire, is it measuring that which we call 'electricity', or is it something else? What something 'is', is ultimately agreed by consensus and may, of course, change with further experiments. As you know, science is always in a state of evolving flux.

Rightly or wrongly, I think a practical definition of it is that it is something that can be objectively measured i.e. it is not a manifestation detected or perceived by just one person. Other people can do the same procedure and get the same result. The notion of something being real must have more than one observer to confirm its existence.

Thanks. I know the notion of 'real' is really a macroworld concept, usually related to whether something is sensorily tangible to us.

Would you say spacetime is as 'real' as, say, the magnetic field? It's real in the sense that there are parameters to it that can be measured?

True

Grammarist is the the wrong sort of source for this sort of question. It's about good English. When you ride a bike well, leisurely and automatically do you ride it consciously or unconsciously? It's neither isn't it. Subconscious thought is conscious thought that is not at the forefront of a person's mind but is still performing important tasks and may come to the fore should a new situation arise, such as a traffic jam ahead or someone is going to cross your path. Unconscious thought is activity like dreaming and the person has no control of them whereas he can proactively modify conscious and subconscious thoughts.

But we don't say "Opened minded" do we?

It uses less muscles as well.

Yeah, I was thinking of the actual separation perhaps giving you psychosomatic effects after every time you saw your kids.

Acceleration is a vector quantity which means it has magnitude and direction values associated with it (two parameters); change the speed up or down, or change the direction, you change the acceleration. Acceleration in physics is not just an increase in speed as commonly used in daily life. It is not a scalar value where it has just a magnitude value or direction. (one parameter)

Could it be stress-related?