Description: Typically, the burden of proof lies with the person making the claim. The more outrageous the claim, the more the claimant should be expected to provide evidence before anyone is likely to believe him. When the claimant instead challenges others to prove his claim is not true he is Shifting the Burden of Proof.
Description: The Counterfactual fallacy is often committed when someone speculates on the specifics of how things would be different in different circumstances, or in the future if a particular thing happens. Where the arguer purports to have more certainty of the hypothetical situation, or their speculation goes against evidence, they are more likely to be committing the fallacy.
Description: Begging the Question is one of those phrases that has come to mean something different over time. Colloquially, it is used to mean ‘raising the question’, but the original meaning is the one invoked by this fallacy, and it’s fun to point out that people are using the phrase wrong, once you’ve explained that tomatoes are fruits and reminded them on the difference between poisonous and venomous.
Description: People often make decisions based on emotion rather than logic, so appealing to that emotion can be a very useful technique when you're trying to persuade someone. However, to be part of an effective logical argument emotion has to be used to back up the argument, rather than form the primary basis of the argument. When, instead, you simply try to scare them into agreeing with you, your argument is fallacious.