While the official Brazilian history of the ship definitively claims to have sunk a submarine, author Robert Scheina notes that this action was never confirmed, and works published about U-boat losses in the war do not agree.
And because hamburgers have always been a food of the masses, casual to the extreme, their history has never been documented well enough to say definitively whose claim is the most rightful.
In 2004, it repeated never-verified and definitively denied claims that John Kerry had an affair and falsely claimed that his wife, Teresa Heinz Kerry, donated money to "radical causes"; in fact, her contributions were earmarked toward specific environmental projects.
He has however continued to refuse to release his tax returns, which could prove his claim definitively.
The results are still so sketchy, and the experiments so demanding, that neither team is ready to claim definitively that it has seen the asymmetry, which goes by the name of charge-parity violation, or CP violation.
"Furthermore, we can definitively reject the claim that carbohydrate restriction is required for body-fat loss".
He definitively rejected the claims of 27 applicants - they have been judged to face no threat of persecution on returning to Afghanistan.
In one case it claimed definitively that Labor's spending commitments had created "a cumulative deficit, or black hole, over and above what is currently in the budget of $67bn.
The entire process will be recorded, showing the provenance of every byte and definitively establishing IP claims.
