Final answer:
The burden of proof falls on the person/people making the most controversial claims.
Step-by-step explanation:
In everyday conversation (as opposed to in debate or in the courtroom), the burden of proof falls on the person/people making the most controversial claims. When someone makes a claim, they need to provide evidence or reasoning to support their claim, especially if it goes against widely accepted knowledge or beliefs. This is because extraordinary claims require extraordinary evidence to be considered credible.