If x is any real number, what is the probability that it is zero? The probability is 0. Therefore, x is not zero. If x is any real number, and it is not zero, does this mean that zero is not a real number? What about 1? 2? I'm so glad to not be a mathematician.
Infinity is a frightening concept. I used to think that everything in the universe is bounded, but eventually I learned that there are galaxies that are moving away from each other at greater than the speed of light. That means that there are conceivably bits of matter than would require infinite time in order to reach, and are an infinitely far distance away from us (since an object moving away from us at higher than the speed of light cannot be measured, according to our current knowledge of the universe).
On the flip side, I've heard that things cannot be infinitely small. There is apparently a minimum distance, beyond which smaller distances make no physical sense. Given, this distance is something on the order of 10^-35's, so it doesn't really mean much to us. This minimum distance would confirm what I've suspected for a while now, which is that there is no such thing as a perfect circle, and that there are no such things as tangent lines, let alone lines. (
But on the contrary)
This would imply that the universe has a positive infinity, yet does not have an infinite amount of precision (that is, it is truly discrete.)
Does information consist of some sort of matter or energy? How does a subatomic particle interact with another subatomic particle? With a smaller subatomic particle? And how do those interact? You might begin to see a problem here.
What is the universe? I assume that outside of the universe there is either nothing or something. If there is nothing, what is the opposite of nothing? What exactly is nothing? Surely there is a difference between a vacuum and the total lack of existence.
Exactly how much affect does the flapping of the butterfly's wings have on the other side of the world? Is this a measurable effect? And to that end, does the flapping butterfly have an effect on the moon? On Jupiter? On Alpha Centauri? In another galaxy? Does it have an effect on a vacuum?
Is it possible for the universe to repeat itself at any point? That is, has the universe ever had every single bit of matter in the exact same place as it was a moment ago? If not, no experiment can be perfect. If no experiment can be perfect, then no knowledge can be scientifically proven. If no knowledge can be proven, can there be a single truth, despite the fact that it is unknowable? If no truth exists, then logic cannot exist as truth, yet the idea of truth not existing depends on the existence on logic.
One of my favorite thought experiments is
Schroedinger's Cat. Why does such a conundrum even exist? Why are things not knowable, or not possible? Why are things possible? (Same as the tree that falls in the forest example.)
What does it mean to be all-knowing? Is there an infinite amount of information in the universe? Is the amount of information increasing at a faster rate than the ability to know or recall the information? If information is increasing at a faster rate than the ability to know it, how can anything be all-knowing?
If there are more than the four appreciable dimensions, we must exist in those other dimensions. What separates existing with four appreciable dimensions from existing in more than four dimensions?
What do
synesthetes see/hear/feel/taste/smell?
Why is the sky so utterly vast? If space is infinitely large, then why am I able to perceive any given amount of it? Isn't any given amount of space literally 0% of the total amount of space? I would occupy literally 0% of space, so I should not exist. This is referring back to the first point, I know.
Why do humans presume to know anything at all? Clearly, nothing we know is more than 0% of the sum total of everything, nor is any amount of information. We exist in literally 0% of total space, yet we are only occupied by ourselves.
What is the real capacity of a human brain? Does it contain our personalities? How about our emotions? What about our character? Finally, what about our souls? Is a soul a bit of matter or energy that exists in this universe? Does a soul even exist, in the most strict definition of "exist"?
If I sleep earlier every day until my sleep schedule is back to normal, will I be able to keep that sleep schedule? Remember, these are just thought experiments.