Explain the issue in Utilitarianism whether pleasure is the only good (Nozick's Experience Machine)
There are experiences where we would prefer something, even if it makes us less happy, and where might prefer something not to happen even if it made us more happy. Thus, pleasure/happiness cannot surely be the only good.
Nozicks experience machine-
Philosopher Robert Nozick came up with the idea of the experience machine, where you could be plugged into a virtual reality machine in which you could experience that of a perfect life. When you're plugged in, you don't know that it is a simulation, and you are living in a world where pleasure is maximised and pleasure is minimised.
However, despite maximising happiness, many people would choose not to enter the machine as they would prefer to live in reality, even if it causes less pleasure.
Specific actions, objects themselves-
An argument is that we may strongly want something in itself, and not the pleasure it will give. For example, if you are a collector of something and you need one more piece to complete your collection, and someone gave you the quantity of pleasure you would receive from getting the piece but from a different source, you would argue that it is the collective piece that you want, rather than a certain quantity of pleasure. If we all just wanted pleasure, then we would settle for anything that gave us the quantity of pleasure we need rather than what we desire in an act.
States of affairs in the world-
People often want specific states of affairs in the world, rather than just seeking things inside our heads. If it were just sensations, then people would have stepped into the machine. However, the majority of people would not do this so this shows that people seek things in the real world over sensations and descriptions of pleasure.