The truth and the lies
What is true and what is not? You can never really tell in some situations but one fact I know about truth is that it's not something that needs to be protected or guarded to be effective. If I were to ask a person to verify if they went to the mall at noon yesterday, all they would need to do is tell me who they spoke to while at the mall, as well as what things they bought.
The point here is that there are some facts stored in the mind of the person who went to that mall that in a way substantiate the event, but there is no need for that person to be sweating on their face and having a breaking voice while attempting to give me details of what they did.
If that person was a liar, he or she will now see a need to build up an entire story from which to base their false truth so to speak. This kind of story is not that stable at all because if your question or remove one small piece from that very long fabricated story then the entire logic starts to collapse.
That is why liars get so angry and call your questions disrespectful or interrogative. If a person has nothing to hide, they can just sit on the and wait patiently for you to ask them even more questions.
There are times when truth can also become complicated with more questions. Let's say, I left my set of keys on the kitchen table, if you say to me I don't see those keys on the table, then I would have to ask, did you move the newspaper I placed the keys on?
Of course this is even an extreme oversimplification of what I think. I can't believe some men take offense to every question as if they were getting assaulted. I know not everyone that becomes emotional about Defending their statement is lying. They could be situations were you're wrongly accused and they show an evidence which looks like you're the one who did something you didn't do but you know the truth that you didn't do it. That's when you get emotional. But even at that time, if you can still be calm and explain every detail, you stand a higher chance of convincing people of what's true.
For those that defend their lies, it's not like these guys are trying to have an actual dialogue with anyone. It's easy to be honest, but there are times when being honest just makes it way more difficult to communicate with the other party involved. Other times, people aren't actually trying to hurt you or say you're lying, they just seem to completely lack understanding of the situation at hand or any common sense whatsoever.
No matter how many times I say the water is wet. You ask me ten times and I say water is still wet, so where does your delusion begin? The problem is you want me to accept a version of history that has never happened, so you will keep questioning me until I submit to hysterical recollection.
This is why you don't always need to hire a lawyer just to prove to someone that the truth is what it is, unless to you life is on the line in the court room.