Thats a really good question.
What is the truth?
I am very Frank, short and usually to the point with my remarks.
I say things as I see them.
The question is, have I perseved and understood the events correctly?
I can tell my version of the truth, but there are two sides to a coin and people with a different view may see things differently.
A referee isn't always right. That's why we have V. A. R in sports now.
Just because we believe something to be true doesn't mean it is. How credible was the source information and are we inadvertently passing on fake news and falsehoods from history down through the generations?