Don't look down

My brother-in-law forced me to go up in the Sears Tower several years ago. I spent the entire time pressed against the inner wall. I hate heights. That's why this innovation looks like a little piece of hell to me.
I wasn't scared of high places as a kid, at least not unreasonably so. I swear I think the fear kicked in suddenly while I was watching a James Bond movie in the 1980s. I remember shuddering at some roof top scene and never being comfortable in high places since.
While in the series tower I was crowded up next to a big picture of Oprah. That would seem to explain my fear of her as well.