User:Chriseargle/Counter/It is an irrefutable fact

It is an irrefutable fact is a dogmatic claim often used to raise a premise or conclusion above question. This indicates a potential weak spot since it is unnecessary to use if the argument is strong. It is also wrong in many cases, even when the fact may seem irrefutable. If the fact is based on observation or induction, there is always a possibility it is wrong. Use of this clause negatively affects an argument in other as doubt cast on the premise invalidates the clause.

Counter
To counter, attack the thing that is supposedly irrefutable as one normally would. Since your opponent's argument has an 'irrefutable fact' modifying the premise, you may attack that clause by simply casting doubt on the dependent premise