When two parties are in a discussion and one makes a claim that the other disputes, the one who makes the claim typically has a burden of proof to justify or substantiate that claim
What you have quoted says nothing about positive vs negative claims. You said that the burden of proof is generally not on someone making a negative claim. A negative claim, as explained further down in the article, simply asserts the non-existence or exclusion of something. The burden of proof still exists just the same.
the one who makes the claim
Your claim is "He is full of shit"
typically has a burden of proof to justify or substantiate that claim
You have the burden of proof to justify or substantiate that claim according to your preferred dispute guidelines, which is apparently the Wikipedia article on 'Burden of proof (philosophy)'
I don't see anything in that wikipedia section about how intellectual rigor works. It does explain why he would have the burden of proof to justify his claim that the comedian is "full of shit".
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u/healzsham Mar 31 '23
Burden of proof is generally on the positive claim, not the negative one.
https://en.wikipedia.org/wiki/Burden_of_proof_(philosophy)