The Slippery Slope: This is when a persuader suggests a negative future
that
does not logically flow from the current situation. For example, when
arguing
about handguns, a persuader invoking the slippery slope might say, "if
you are
going to outlaw handguns for safety reasons you will eventually have to
outlaw
automobiles."
Appeal to Ignorance: This is when a persuader invokes some variation
of, "yes,
but, we might never know what would happen if..." While it is a good
rhetorical
device, the fact that something has in fact not happened negates its
evidentiary value.
Protecting the Hypothesis: This is when a persuader considers only
their side
of an argument without offering an analysis of the opposing position.
One-sided
arguments are logical fallacies.