[stcredzero]

Also, a just society needs to operate by certain fictions: for example, that people are innocent until proved guilty or that all men are created equal. Among those should be the assumption that others can be persuaded through logical means

This is good if you are using this as a filter to find exceptional people. The exceptional people can often be persuaded, because they actually listen and consider unfamiliar ideas and ways of thinking. (Also note, that they aren't always persuaded.)

However, if you are playing the odds - odds are people aren't really listening or devoting sufficient attention to a complex or genuinely novel idea.