Arguments are based on logic and reasoning. However,
logic has its limitation.
In the 1930s, Austrian mathematician Godel proved
a theorem which became the "Godel theorem" in
cognition theory. It states that any formalized
'logical' system in principle cannot be complete
in itself. It means that a statement can always be
found that can be neither disproved nor proved
using the means of that particular system. To
discuss about such a statement, one must go beyond
that very logic system; otherwise nothing but a
vicious circle will result. Psychologist say that
any experience is contingent - it's opposite is
logically possible and hence should not be treated
as contradictory.