EXAMPLE
2.2.16 SOLUTION
If I
buy cheap gasoline, then my car runs badly.
If I
don't change the oil, then my car runs badly.
Therefore,
if I buy cheap gasoline, then I don't change the oil.
Let p: ÒI buy
cheap gasolineÓ
Let q: ÒMy car
runs badly.Ó
Let r: ÒI donÕt
change the oilÓ
The argument has
this from:
We
donÕt need to make a truth table, because we recognize that this is a common
form of invalid argument called a False Chain.