You can make constitutional claims that can be disproved using the tools of legal argument.
The difficulty Cantor had in proving the continuum hypothesis has been underscored by later developments in the field of mathematics: a 1940 result by Gödel and a 1963 one by Paul Cohen together imply that the continuum hypothesis can neither be proved nor disproved using standard Zermelo–Fraenkel set theory plus the axiom of choice (the combination referred to as "ZFC").
The evidence of Ibn al-Shaykh al-Libi, which was later disproven, was used by George W Bush in 2002 during a hawkish speech calling for the removal of Saddam Hussein, in which he said: "We've learned that Iraq has trained al-Qaeda members in bomb-making and poisons and deadly gases".
The first of these is relatively easy to disprove just by using facts.
If the player to the left does not hold any of the cards you mentioned, the next player in the circle attempts to disprove your theory using only one card.
A single satellite snapshot apparently showing no volcanic ash in an area designated a red zone does not disprove the methodology used by the CAA and the Met Office, as Mr Walsh implied.
Next we recite Mason's proof of an analogous assertion for polynomials \(A t),B t), C t)\) that implies, among other things, that one cannot hope to disprove the ABC conjecture using a polynomial identity such as the one that solves the Diophantine equation \(x^2 + y^2 = z^2\).
Yet, this knowledge is needed to prove or disprove the necessity of using expensive materials.
Under the harsh glare of public scrutiny, the now Super Bowl-bound squad had to play together on the field, week in and week out, in order to disprove the haters -- using that external negativity as its motivation to perform every time it stepped under the bright lights of a given stadium.
Scientists can now use MRI to determine what part of the brain is active in decision making, Baltimore said, which may ultimately be used to disprove the "selfish gene, a controlling notion in biology". Because of the so-called selfish gene, humans always act to favor their own genes, causing altruism toward one's own family, for instance, and not toward another family.
The assistant deputy minister of the Alberta Crown Prosecution Service, Eric Tolppanen, said, "we couldn't disprove that the use of force was reasonable".
