This is how Elon Musk found out Bill Gates has no basic science knowledge. Gates came to visit him at the Tesla Gigafactory in Austin and told him it was impossible to have a long-range semi-truck. Elon said they literally have them. You can drive them. Pepsi is literally using them right now. Gates: “No, no, it doesn’t work. It doesn’t work.” Elon was kind of stuck there. So he asked the physics question. You must disagree with the watt-hours per kilogram of the battery pack, or you think the watt-hours per mile of the truck is too high. Combine those two numbers and the range is low. Which one of those numbers do you think we have wrong? And what numbers do you think are correct? Gates didn’t know any of the numbers.