lonegranger has asked me to explain in my own words how string theory provides evidence for a flat Earth.
In the interest of an intellectually honest, rational, and productive debate, I will do so here. If anyone is interested in learning more about the topics I discuss here, each title will be hyperlinked to the relevant Wikipedia article. This will also give you the term you want to search if you distrust Wikipedia.
Words, Words, WordsIn our current understanding of physics, information cannot be created or destroyed. But to understand the implications of this, we first have to understand what information is.
In this context, information refers to the 'coding' of a particular thing, or what distinguishes one thing from another. Think of it like this;
A LEGO house may contain all the same bricks as a LEGO plane, but the information between the two is fundamentally different.
Just like matter itself, in our current understanding, information cannot be created or destroyed. It can, however, be transformed to a certain extent, which is why I can change my LEGO house to a LEGO plane. Theoretically, if we could know all the information held by the LEGO plane, we could reconstruct the LEGO house.
Spooky Black HolesSo, why is it problematic that information cannot be destroyed?
A black hole consumes information holders (the things formed out of information and matter), and to our current observations, destroys them.
There's a barrier in black holes called the 'event horizon'. This barrier represents the point where the gravitational pull of the black hole is so strong, nothing can escape, not even light. We have no way of knowing what happens beyond the event horizon, but we do know that when a star or a planet gets sucked beyond it, that star or planet is gone.
The matter of that consumed object is transformed into energy for the black hole to burn (a black hole will radiate away this energy as Hawking Radiation off the surface over time). But we don't know where the information goes.
It looks like all the different sorts of information, the information that codes a planet, the information that codes a star, the information that codes my LEGO house (no!), all gets turned into the same information.
So far we're fine, but what happens when a black hole disappears? I mentioned earlier that a black hole radiates energy off of its surface, eventually, this will lead to all of the energy radiating away, killing the black hole.
So what happens to all the information that the black hole sucked up? Where does it go?
This is very problematic. It is formally known as the Information Paradox. Information can't be destroyed, but it sure looks like it is.
The Holographic PrincipleThere are many resolutions to the Information Paradox, including pocket dimensions, "information diamonds" left behind after a black hole radiates all of its energy away, and many others. However, one explanation states that the information is stored on the surface of the black hole. In this scenario, the information isn't destroyed because the Hawking radiation can absorb that information as it radiates away.
The information isn't lost, current physics is fine, and the world works again.
But this raises another interesting question. If all the necessary information for everything in the universe can be encoded on the surface of a black hole, a 2D surface, then maybe our whole universe is like that. Maybe we're living on the surface of a black hole, projected into three dimensions but actually only in two. This is called the Holographic Principle.
If the holographic principle is true (and
studies last year have indicated some preliminary evidence of its validity), then the information for the Earth could be encoded on a 2D surface. This surface might even be flat! The Holographic Principle also explains many smaller questions in science, like why gravity works on the small scale, and why quantum mechanics and general relativity both seem to be true.
This is how string theory could mean that the Earth is flat.
If you want an equally wordy but much more enjoyable explanation, check out this video:
It explains it very well, I was simply challenged to lay out the case in my own words. I hope I have done so here, but if you still have questions, watch the video and read the Wikipedia articles, they are very helpful!