I’ve been a big fan for years. I listened to his podcast with Brady Haran, Hello Internet, religiously, and was heartbroken when it ended, abruptly and without notice. Now I suspect that Brady dodged a bullet. I listened to an episode of Grey’s other podcast, Cortex, recently, and it was disturbing. His behavior is unhealthy. He’s like a Vulcan, but not fun. And now he’s selling a productivity notebook? I don’t begrudge him selling anything, but this notebook is like a look into his diseased mind.