Next time you meet someone with a strictly “realistic” (materialistic) view of the universe, that only that which can be seen (scientifically observed) exists, point out the following:
96% of the universe is un-observable and is not technically “there.” I was told in my high school physics class that a spaceship leaving Earth would go through millions of miles (or more) of “nothing” to get to “something.” We now have names for that “nothing”—antimatter, dark matter, dark energy—but we still don’t know what it is. Or even if it is.
The 4% of the universe that can be observed, which is itself 99.9999999% empty space, is mostly studied by observing its after-effects which, according to quantum theory, mysteriously change when they are observed.
According to quantum mechanics: Matter is not really “there,” it is simply energy, and energy is made up of undulations of invisible particles. And as if that’s not enough to confuse us, consider this: Subatomic particles can occupy two places at the same time, and some (which technically are also not particles) can arrive at their destination before they leave. Bottom line: All of space-time (that which can be seen) is actually an interpretation of reality, rather than reality itself.
So, from a strictly “realistic” (materialistic) standpoint, the universe does not exist! Quantum science circles back again and again to the conclusion that consciousness (that which cannot be seen), rather than matter (that which can be seen), is the ultimate reality.
“And so we fix our eyes not on what is seen, but on what is unseen, since that which can be is seen is temporary, but that which is unseen is eternal.” ~2 Corinthians 4:18