Question: What is the difference between truth and falsehood?
Answer: At the moment this difference is in the “eye of the beholder”.
Due to our inherently egocentric, self-serving, self-justifying and subjective nature we all define for ourselves what we consider “truth vs falsehood”. And it is true even to the “justice” courts, jury, state laws determine, this is why even the decisions of the Supreme Court are debated and viewed with suspicion, since there is nobody who would not be influenced by selfish, subjective interests, calculations.
In order to understand “absolute truth vs falsehood” we would need to develop an unprecedented, selfless, objective viewpoint of reality, where we would all “meet” in a “neutral zone” where nobody is influenced by their own selfish, subjective viewpoints, calculations.