There is no use trying to reason with people.

It never works.

If you just directly state in front of their face why they are wrong they seem to instantly go full retard and ignore everything or fail to understand. You have to use a different angle, give them the information needed to reach the same conclusion, gradually building up their understanding taking care not to tread on any social land mines, but never ever say "incorrect" or "wrong".

Use punchy one-liners. You can sometimes throw your opponent out of his stride by interjecting a confident, concise cliché. Here are some good ones:
        That begs the question.
        That is beside the point.
        You’re being defensive.
        Don’t compare apples and oranges.
        What are your parameters?


Ridicule and humiliate your opponent. This can be very effective in front of an audience but will never win over the opponent himself.


Deliberately provoke your adversary. Find something that makes them angry and keep wheedling away on this point until they lose their temper and so the argument.

Distract. Throw in diversions which deflect the other person from their main point.

Exaggerate your opponent’s position. Take it way beyond its intended level and then show how ridiculous and unreasonable the exaggerated position is.

Contradict confidently. Vigorously denounce each of your opponent’s arguments as fallacious but just select one or two that you can defeat to prove the point. Then assume that you have won.