So let's just keep that in mind and then think a little bit about hypothesis testing and how we can use this framework. So let's put all that in the back of our minds. And let's say that you have devised a new test. You have a new test and you don't know how accurate it is. You have a new cholesterol test. You don't know how accurate it is. You know that in order for it to be approved by whatever governing body, it has to be accurate 99, the probability of it being accurate has to be 99%.