[Varkiil]

Ad populum, ad hominem, ad personam... Those are argumentations that make you lose all credibilty so try not using them.

The most important part after this is being honest, things must come out naturally just as shown by lies detectors. When you try to lie your brain makes a lot more effort so don't do it and your speech will be way smoother and won't tend to contradict itself.

It counts for extrapolation too, be honest about your knowledge or you will make a fool of yourself