Oh boy. It sounds like someone took a stats class in high school and struggled with some of the basic concepts. Your original post was:
"Height in track and field is a bell curve. Look that up. The shortest runners are in the 60/100 and the marathon. Tallest are in the 400/800."
First, height is NOT a bell curve in track and field. Thinking that you are proving that by posting a link that shows AVERAGE heights at each event in London is a laughable attempt at that. AVERAGE, is just that -- average -- and shows nothing about the distribution. When the 3 greatest 100M runners all are over 6 feet tall (with the greatest 5 inches above it), that's anything but a bell curve. Call it a barbell or lumpy but it's not a tail but a spike at the pointy end.
You then apparently like Malcolm Gladwell's tripe based on this missive:
"Usain Bolt is a massive outlier."
He's not massive when Carl Lewis and Gatlin, probably the next 2 greatest 100M runners of all-time, are right there with him over 6 feet tall.
You also completely ignored the part about how PR not racing well in heat means that all tall people don't race well in hot marathons -- despite the fact that there are plenty of tall people who have raced well in the heat. Tergat, Rochat-Moser and Fiacconi are 3 right off the top of my head. Most importantly, Gwen, you know, the person this thread is about, does fine in hot races.