HOW TO PROVE IT, PART 6

proof by picture:
A more convincing form of proof by example. Combines well
with proof by omission.

proof by vehement assertion:
It is useful to have some kind of authority relation to the
audience.

proof by ghost reference:
Nothing even remotely resembling the cited theorem appears in
the reference given.

0.23772914179­51750.63619567695­73850.89123628525­17040.96572491977­98090.50042818452­95570.27153278862­53220.50256578451­6573
55711.36712298869­9036.51612525328­4784.8181167309