It’s something we tend to grow up always assuming is real. This reality, this universe that we see and hear around us, is always with us, ever present. But sometimes there are doubts.
There’s a thing in philosophy called the Simulation Argument. It posits that, given that our descendants will likely develop the technology to simulate reality someday, the odds are quite high that our apparent world is one of these simulations, rather than the original world. It’s a probabilistic argument, based on estimated odds of there being many such simulations.
A long time ago, I had an interesting experience. Back then, as a Christian, I wrestled with my faith and was at times mad at God for the apparent evil in this world. At one point, in a moment of anger, I took a pocket knife and made a gash in a world map on the wall of my bedroom. I then went on a camping trip, and overheard in the news that Russia had invaded Georgia. Upon returning, I found that the gash went straight through the border between Russia and Georgia. I’d made that gash exactly six days before the invasion.
Then there’s the memory I have of a “glitch in the Matrix”, so to speak. Many years ago, I was in a bad place mentally and emotionally, and I tried to open a second floor window to get out of a house that probably would have ended badly, were it not for a momentary change that caused the window, which had a crank to open, to suddenly become a solid frame with no crank or way to open. It happened for a split second. Just long enough for me to panic and throw my body against the frame, making such a racket as to attract the attention of someone who could stop me and calm me down.
I still remember this incident. At the time I thought it was some intervention by God or time travellers/aliens/simulators or some other benevolent higher power. Obviously I have nothing except my memory of this. There’s no real reason for you to believe my testimony. But it’s one reason among many why I believe the world is not as it seems.
Consider for a moment the case of the total solar eclipse. It’s a convenient thing to have occur, because it allowed Einstein to prove his Theory of Relativity in 1919 by looking at the gravitational lensing effect of the sun that is only visible during an eclipse. But total solar eclipses don’t have to be. They only happen because the sun is approximately 400 times the size and 400 times the distance from the Earth as the moon is. They are exactly the right ratio of size and distance for total solar eclipses to occur. Furthermore, due to gradual changes in orbit, this coincidence is only present for a cosmologically short time frame of a few hundred million years that happens to coincide with the development of human civilization.
Note that this coincidence is immune to the Anthropic Principle because it is not essential to human existence. It is merely a useful coincidence.
Another fun coincidence is the names of the arctic and antarctic. The arctic is named after the bear constellations of Ursa Major and Minor, which can be seen only from the northern hemisphere. Antarctic literally means opposite of arctic. Coincidentally, polar bears can be found in the arctic, but no species of bear is found in the antarctic.
There are probably many more interesting coincidences like this, little Easter eggs that have been left for us to notice.
The true nature of our reality is probably something beyond our comprehension. There are hints at it however, that make me wonder about the implications. So, I advise you to keep an open mind about the possible.