Is our perception bounded by the scale and lifetime of
things we can measure? If the multiverse theory is correct and there is
empirical evidence that it is correct, then our universe or any universe is the
smallest building block in that collection of universes. According to one
theory there are many times more universes than the number of atoms in our observable
universe. Now think of us as observers in our universe and the scale and the
life time of things we can measure, from galaxy clusters with super massive
black holes to fermions and hadrons. We know these exist, because we can
measure their scale in some way, either direct or indirect. This is what our
universe is composed of or so we think. What lies beyond our power of
measurement? Is there a universe which completely lies within the confines of
the smallest subatomic particle? A universe with a lifetime so small it
destroys itself even before it can be measured? It's more of a question of
philosophy in science rather than pure science but then science and philosophy
do meet very often. A similar question can be asked on the other end of the
size spectrum. Is there a universe so huge and with a lifetime so vast that we
can't measure it? Beyond our universe, multiverses where we are relatively
small like a fermion? A universe so vast that it has remained practically
unchanged in the last 13.8 billion years our universe has been alive? To an
observer in that huge universe are we like a tiny universe which would
disappear in a millionth of the time it takes to blink his eyelid?
