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You'd need a big test tube. But we can test the skin, bone and makeup of the foot as its a physical thing.Can you put a foot into a tgest tube?
Probably so. The idea of distance to a white European will be different to an Indigenous person. Who is right. I mean what does distance even mean in cosmological scales. We could never reach a distant galaxy and even if we did by the time we go there it would no longer even exist or exist in the way it did when we first measured it.By the same argument, distance isn't real either.
Distance is a mind concept. Two people can look at the distance of a hill to the top. It maybe 1500 metres high. But that is just a quantitative measure. But there is also the conscious experience of that hill. To one the distance is nothing and they scale the hill like it was only 10 feet tall. To the other they see it as an impossible obstacle, like its 15,000 metres and not 1,500 that they struggle to climb it or even give up before attempting.
What is more relevent the quantified measure or the actual experience of the distance which is different for people. Sometimes its the quantified measure but sometimes its the real world experience of that distance that matters. I would say the experience of distance is more relevant as far as relaity is concerned. It actually tells us whats happening by experiencing distance and time.
Well technically yes they appear direct over the north and south poles.And your point? Do you have some source that says that the location of the north galactic pole is found by going north from Earth';s north pole?

Celestial pole - Wikipedia
But then if you bring it back to time then it becomes arbitray acording to relativity. People in different locations around the word will experience different times, someone at the top of Mt Everest of on a supersonic jet will experience time slower and someone on another planet or universe may experience time completely difference to ourselves.But there is a very clear definition of north, that can be done by anyone. It's not arbitrary.
What was before the Big Bang: the theory of Roger PenrosePlease give me a source from a legitimate scientist where they claim that time existed before the Big Bang.

What was before the Big Bang: the theory of Roger Penrose
The question "What was before the Big Bang?" led Roger Penrose to an interesting cosmological concept in which our Universe is just one link in an endless chain of worlds.

Mind-Bending Study Suggests Time Did Actually Exist Before The Big Bang

Mind-Bending Study Suggests Time Did Actually Exist Before The Big Bang
According to a straightforward interpretation of general relativity, the Big Bang wasn't the start of 'everything'.

The strongest evidence for a Universe before the Big Bang

The strongest evidence for a Universe before the Big Bang
The hot Big Bang is often touted as the beginning of the Universe. But there's one piece of evidence we can't ignore that shows otherwise.

How Do We Know The Universe Is Infinite?

How Do We Know The Universe Is Infinite?
Is the universe infinite or do we say that because we have not traveled to or seen its walls yet? This question was originally answered on Quora by Viktor T. Toth.

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