There's like a lot of branching rules in business because it's like a chess game. No humans ever played the same chess game twice unless they did it on purpose. I would branch it to go, I call this the grandfather rule, non-grandfather product. So did your grandfather buy this? So if I'm selling vacuum cleaner, most of our grandparents have used vacuum cleaner. So therefore if the grandfather's used it, it's a simpler product that's multi-generations have bought it. I have to be less persuasive. If it's a non-grandfather item, like I'm selling virtual reality glasses, the owner of Snapchat's a multi-gener, and remember his glasses thing failed like horrifically. Remember he bought 100 million Snapchat glasses and nobody used it, like not even one person. Because he forgot. Who here's grandfather wore virtual reality Snapchat glasses? Therefore you have to explain it more. He just bought it and was like, who wants Snapchat glasses? No explanation. So it depends on the complexity, the ubiquitousness, you would say the commonness of the product.