Whatever is good or bad can be measured in a
quantitative way.
To help us choose the good
thing to do and work out the
possible consequences of an
action.
Bentham provided a way of measuring this:
Seven Elements:
The intensity of the pleasure (how deep)
The duration of the pleasure caused (how long)
The certainty of the pleasure (how certain or uncertain)
The remoteness of the pleasure (how near or far)
The chance of a succession of pleasures (how continuous)
The purity of the pleasure (how secure)
The extent of the pleasure (how universal)
An act would be moral if it brings the
greatest amount of pleasure and the
least amount of pain
The value of an act is the amount it increases general utility or happiness.
Acknowledges that the same act in some
situations produces the greatest good but
in other situations not.
This is why Utilitarianism allows moral
rules to change from age to age and
situation to situation.
Issues with the theory:
It can't cope with emergency
situations as you need to use the
hedonic calculus to figure out
what to do and in an emergency
using this may result in someone
dying rather than possibly being
saved.
It encourages injustice.
EXAMPLE - If there is an act utilitarian sheriff in a town of Mississippi
and racial tensions are made worse by the rape and murder of a white
woman. You are aware that if the killer isn't caught soon then there will
be trouble and several black men will die at the hands of the Klan. You
are not aware of who the killer is but you know that possibly Old Joe
couldn't possibly have done it. However, despite this you frame him by
planting evidence on him. The all white jury convicts him and so you
hang an innocent man. Thus stopping the riot and saving some innocent
lives.
It is self defeating
A basic requirement of a moral
theory is that if everyone acted the
same then according to it then it
would produce a better world. So a
theory is self defeating if the world
is actually made worse when
everyone acts according to it.