1=2
Theorem: 1=2
Proof:
1. let A=1
2. let B=A
3. multiply both sides of (2.) by A, you get AB=A2
4. subtract B2 from both sides, you get AB-B2=A2-B2
5. factor left and right hand sides, you get B(A-B)=(A-B)(A+B)
6. divide both sides by (A-B), you get B=A+B
7. plug A=1 and B=A into (6.), you get 1=2
Q.E.D.
