You seem to be thinking that the *entire* experiment is conducted blindly. That’s only the first part.
You perform the double-blind experiment first and then analyze the data afterward with full knowledge of what happened.
The double-blind is only for conducting the experiment and gathering the data. Once you’re done with those parts of the experiment, then you crack open the data and actually see which subject received which treatment — placebo or not-placebo. *Then* you can draw conclusions about what happened.
Latest Answers