Yep. After analyzing each AAMC I have taken, there are patterns but even then it is ridiculous. Natural Science writers love to catch test takers by tweaking a word here and there to make their wrong answers. However, humanities writers do the opposite and twist their words to make their right answers. The AAMC does everything in their power to make this section an impossible thing to study for. There are no real tricks that can be used, unlike the science sections. One just has to understand the passage and knowing how to analyze the questions/answers.