Sure, you can have very sound theory to justify that But how do we measure it? How can we tell that it was successful / good idea or not? Even things like wha

Sure, you can have very sound theory to justify that But how do we measure it? How can we tell that it was successful / good idea or not? Even things like what is the difference between "chat.com" and "chat.ai"? Would "chat.ai" for 1M be more efficient than "chat.com" for 15M?