So what we would do here is we would give this group a placebo, a placebo, and this group would actually get the medicine, the medicine. But those pills should look the same and people should not know which group they are in. And that is a, when we do that, that is a blind experiment, experiment. Now, you might have heard about double blind experiments. Well, that would be the case where not only do people not know which group they're in, but even their physician or the person who's administering the experiment, they don't know which one they're giving. They don't know if they're giving the placebo or the actual medicine to the group. So let's say we want to do that.