rationalskepticism.org

scott1328 wrote:Ooh I have one
Let a=b
Multiply both sides by a: a2 = ab
Subtract b2 from both sides: a2-b2 = ab - b2
Factor the left side: (a-b)(a+b) = ab - b2
Factor the right side: (a-b)(a+b) = b(a-b)
Divide out the common factor (a-b): (a+b) = b
Since a=b, substitute for b: a+a = a
Simplify: 2a = a
Divide out common factor a: 2=1

Therefore all of mathematics is a sham and God exists.