Arguments for non-objectivism: what is the experience machine thought experiment?what is it supposed to show about hedonism?

Arguments for non-objectivism (subjectivism)

Answer the following question in three to five paragraphs (16 points).

Why are the following arguments for non-objectivism (subjectivism) not good arguments?
P: Morality involves matters of opinion. Therefore, C: there are no right or wrong answers in morality (no objective moral truths).
P: People often disagree about morality. Therefore, C: there are no right or wrong answers in morality (no objective moral truths).
P: There are no moral absolutes. Therefore, C: there are no right or wrong answers in morality (no objective moral truths).

Answer the following question in two to three paragraphs. (12 points)

Is this a good argument?

P: Happiness is the only thing that we want for its own sake. C: Therefore, Happiness is the only intrinsic value.
Be sure to say whether the argument is valid, and explain why or why not. Be sure to say whether you believe the argument is sound, and explain why or why not.

Answer the following question in two to three paragraphs. (12 points)

What is the experience machine thought experiment? What is it supposed to show about hedonism?