If the Earth were flat, then the oceans would pour off the sides. The oceans do not pour off the sides of the Earth. So the Earth is not flat. Response: That's just propaganda put out by the elite to keep people ignorant of the truth. You shouldn't be so gullible to believe everything they teach you in school. The response disagrees with the conditional premise. The response disagrees with the other premise. The response just disagrees with the conclusion. The response commits the circumstantial fallacy. The response commits the fallacy of Abuse.