You could have communicated much more clearly. It was not at all clear that you understood the post and wanted to have a specific side discussion. It read like you were taking the post at face value to discuss the failure of IQ testing. It especially even more like a misunderstanding because the post wasn't even about IQ tests, but standardized tests. In fact, your top level post and this one I'm responding to both felt snide to me. First snide about the graph and IQ tests, then snide about the fact that people didn't understand your unclear communication. You came off as one of those snide reddit users zooming past the post to make a point, especially with your aggressive defenses. Slow down. Consider your messaging more carefully. We are here to have conversation. Make sure you are too.