MrStakhanovite wrote:happiness = morality?
Yes. Collectively.
Keep in mind that human compassion and empathy must be taken into consideration.
If one supposes that we should, as a society, kill or imprison Mitt Romney and take his millions of dollars and evenly distribute it to all unhappy people, in order to increase their happiness, thus making a 'moral' decision, you are not properly considering how unhappy such a decision would make me, regardless of whether I receive any of his money. Knowing that such injustice was perpetuated to make me happy, would make me unhappy. Thus, such actions would be immoral.
It is important to point out that Harris points out the difference between things which are knowable in theory and those things which are knowable in practice. This point may make a difference in how one perceives his argument.