Because lying is always easier than telling the truth? You have to be incredibly naive to think information/evidence is treated equally. If you prove one lie

Because lying is always easier than telling the truth? You have to be incredibly naive to think information/evidence is treated equally. If you prove one lie wrong 20 are up and running. Imagine your proposal in court: if you're caught in a lie, just move the goalpost and if found guilty of lying in court nothing happens! Because the super duper rock solid evidence that will take 20 years will surely convince everyone to switch sides.