LXL Theorem
The LXL Theorem is an advanced philosophical theorem used to differentiate texts from non texts. The LXL Theorem dictates that if one could disprove something's existence, then the non-text nature of the said item would be justified as something that does not exist could not possibly be a text. The theorem has received numerous critical acclaim due to its consistency, logical soundness and overall accuracy. Many other theorems have been derived from the LXL theorem, such as the Reverse LXL Theorem and the Inverse LXL Theorem.
"According to the LXL Theorem, this is not a text"