> had a hypothesis about drug addiction, designed an experiment to prove his hypothesis. Performed the experiment, measured the results
That's the very definition of the Scientific Method, so I don't understand what problem you're pointing out:
"The overall process of the scientific method involves making conjectures ( hypotheses), deriving predictions from them as logical consequences, and then carrying out experiments based on those predictions." -- from http://en.wikipedia.org/wiki/Scientific_method
(That the experiment has not been replicated as you claim could be a bad sign, but that's a separate matter.)
That's the very definition of the Scientific Method, so I don't understand what problem you're pointing out:
"The overall process of the scientific method involves making conjectures ( hypotheses), deriving predictions from them as logical consequences, and then carrying out experiments based on those predictions." -- from http://en.wikipedia.org/wiki/Scientific_method
(That the experiment has not been replicated as you claim could be a bad sign, but that's a separate matter.)