Hi how are you. I'm good. what are you up to? I'm writing this blog. . . today i learned about double blind study. That is a clinical trial that both the doctors and the patient don't know who got the real drug and who got the placebo. A placebo is a sugar pill they give people in the study as the control. the control is the variable that doesn't change. So you walk into an office with a friend for A clinical study for an male pattern hair loss drug. They give both of you some pills that you have to take each day. After a week you hang out again one of you nothing is happening. The other is freaking out because he is seeing things but his hair is looking nice. Who got the real drug and who got the placebo? The guy who got the placebo is the one that nothing is happening too. The other guy got the real drug. The doctors will look at this for the results of the study to find the drug works but it makes you see things.