When there is a positive claim (X is true) and a negative claim (X is false), which one initially has the burden of proof?

Question

Quizplus · Accepted Answer

The burden of proof lies with the person making the positive claim. If someone claims that X is true, they must provide evidence to support their claim. The burden of proof does not lie with the person denying the claim unless they also make a positive claim in the opposite direction (e.g. if someone says "X is false because Y is true"). In general, the burden of proof is on the party who is making the assertion.

When There Is a Positive Claim (X Is True) and a Negative