There is some amount of evidence that should convince you that the other side is wrong. How much time would you spend reading articles saying that horoscopes are real? People are allowed to move their beliefs away from the 50:50 prior, otherwise what would be the point of collecting evidence.
Second, even assuming the “other side” has nothing true to convey, to build a model of how the world works, you have to know how the people on the “other side” are thinking.
First I would recommend observing their actions. Only after you noticed some patterns, you should start listening to what they say. Otherwise their words may distract you from their actions. -- That shouldn’t happen to a hypothetical perfect rationalist, but it sometimes happens to humans.
There is some amount of evidence that should convince you that the other side is wrong. How much time would you spend reading articles saying that horoscopes are real? People are allowed to move their beliefs away from the 50:50 prior, otherwise what would be the point of collecting evidence.
First I would recommend observing their actions. Only after you noticed some patterns, you should start listening to what they say. Otherwise their words may distract you from their actions. -- That shouldn’t happen to a hypothetical perfect rationalist, but it sometimes happens to humans.