36 How to Win Every Argument
that certain things must be true, and ends up with a conclusion
which flatly contradicts them. If the conclusion is not consistent
with the arguments used to reach it, then somewhere there is a
hole in the reasoning through which the logic has slipped silently
away.
'Son, because nothing is certain in this world we have to hold on to what
experience tells us. '
'Are you sure, Dad?'
'Yes, son. I'm certain.'
The fallacy is identified by the inconsistency. If the conclusion
contradicts the premises, at least one of them must be wrong.
This means that our conclusion is either false itself, or derived
from false information.
The conclusion which denies its premises constantly slips
uninvited into religious arguments. People are so used to
thinking of divine beings as exceptions to every rule that they
tend to use the word 'everything' when they mean 'everything
except God.'
Everything must have a cause. That, in turn, must result from a previous
cause. Since it cannot go back for ever, we know that there must be an
uncaused causer to start the process.
(But if everything must have a cause, how can there be such a thing
as an uncaused causer?)
The fallacy has a most distinguished history, being used
(although not identified as such) by Aristotle and Thomas
Aquinas among many others. It has many faces. The 'uncaused
causer' can be a 'first cause,' or even a 'first mover'. It can be
reworded in many ways, but never without fallacy.
Attempts to make a divine being the allowable exception to