infinite space

True, but if the arrow and the person were to shrink at the same rate of speed as they were moving towards each other, theoretically they would never meet.

Well, we know the duration of the universe isn't infinite in the past. If it were, the night sky would be infinitely bright from the light of an infinite number of stars, which would have had an infinite amount of time to suffuse the universe. Or so it's been explained to me.

Well, sure. And our universe could be a bubble in a vast cosmic bathtub. But there's no way to tell, is there? The minute we start talking about what's outside our boundaries of space, we've left the purview of science, and we can make up whatever we like.

Why would they do such a thing? And how would they know what direction to move?

Matchette OUtline of MetAphysics p. 33 "In a quite definite sense, our view is also atomistic- although our "atom", we shall see, is something queite different from the traditional philosophical, or even physical atoms.Our theory asserts that the fundamental substance, the basic building block of the universe, that of which all esle in the universe, the relative world, is comprised, is an ultimate, primordial particle which we name, for presently apparent reasons, the Zero-Atom-Unit.In a literal sense of the term, atom, the Zero-Atom Unit is an atom. It is ultimate and indivisible.Why an atomisitc hypothesis? Surely this is the direction of the discoveries and researches of contemporary physics. Even as early as 1878, the great Maxwell said: "Natural causes, we know, are at work which tend to modify, if they do not at length destroy, all the arrangements and dimensions of the earth and the whole solar system. But though in the course of ages catastrophes have occurred and may yet occurr in the heavens- though ancient systems may be dissolved and new systems evolved out of the ruind, the molecules out of which these systems are built - the foundation stations of the material universe - remain unbroken and unworn." If we replace "molecule" by "atom", the point of view is clear and contemporary" and now between 1950 and 2000 replace this adjective or noun with "Newton's 'black body'" and I beleieve we have metaphysically Danjuns notion but that is for Dan justly to say not me. One may try to use Boschovichian energy for instance as to how sun light provides an embryo negentropy with or without neophenogenesis! Read please.

It was just a hypathetical example, NOT a theory of mine.

That's what makes theorizing so fun, ANYTHING IS POSSIBLE.
We are limited only by our imagination.

The word most often used in this context is "speculating". It allows wilder flights of fancy.

Humanity used to believe that atoms were the smallest particle(life's building blocks). Then we found a way to peek inside and found electrons and a nucleus and thought that was it. Then we found out that the nuculeus is made up of protons and neutrons and for a long while it was believed that protons neutrons and electrons were the smallest particles to exist, until we found out that protons and neutrons are made up of quarks. Eventually scientists will learn to except that all particles are made up of other particles, which are made up of other particles, which are made up of other particles, infinitely. (at least in my opinion)

Why would they accpet such a thing, when it's pretty clearly contradicted by the fact that we can explain all of the particles with string theory?

Have you ever asked yourself what those strings might be made of?
And what makes up the things that make up the strings, and what makes up those and so on.

They're vibrating spatial membranes. They're not made of anything different than what empty space is made of.The problem with your ideas is that infinitely recursing matter doesn't explain why there's matter at all. String theory explains that empty space and matter are really different forms of the same thing.

What are the membranes made of?

How do you take quotes from other people and put them at the top of your reply in a blue frame like that?Just wondering.

Spacetime.(BTW when you're replying to a message, click over on the left where it says "*UBB Code is ON" and you can see all the codes. The one I use to make the blue boxes is the qs code.)