>What would convince me that 2 + 2 = 3, in other words, is exactly the same kind of evidence that currently convinces me that 2 + 2 = 4: The evidential crossfi

>What would convince me that 2 + 2 = 3, in other words, is exactly the same kind of evidence that currently convinces me that 2 + 2 = 4: The evidential crossfire of physical observation, mental visualization, and social agreement. From http://lesswrong.com/lw/jr/how_to_convince_me_that_2_2_3/ http://lesswrong.com/lw/jr/how_to_convince_me_that_2_2_3/ I should note that Eliezer does not argue for moral relativism. Although there are no moral laws written into the fabric of the universe, humans all have very similar brains. With the exception of some outliers (sociopaths) most of our moral intuitions are very similar. There's also the caveat that culture, religion, and philosophy (among other things) can work as an "off switch" for these intuitions.