Here is an example of being wrong. "Geoffkait claims he is a theoretical physicist .. it’s right in these forums. Then geoffkait claims he never said he had a degree in theoretical physics". atdavid proves that geoffkait actually has a degree in aeronautical engineering (check UVA records), then proves geoffkait actually wrote that he had a degree in theoretical physics (he wrote that in a forum). See, that is called addressing the content and proving a claim to be wrong.
atdavid makes a "claim". geoffkait’s response, "you’re wrong" and "you cut and paste from wikipedia", etc. No proof that atdavid’s claims are wrong, and usually an ad-hominem.
Notice a difference? geoffkait and a clique of others like to tell me (and others) that they are wrong, but unsurprisingly, can never show how we are wrong.