Earlier quoted context omitted.
Caffeine would be illegal to possess, if it were invented yesterday. 80% of people couldn't distinguish I.V. cocaine from I.V. caffeine in some study I am unable to locate at the moment, which I think involved Nora Volkow from NIH, either as PI or collaborator.
>80% of people couldn't distinguish I.V. cocaine from I.V. caffeine in some study I am unable to locate at the moment That is complete bullshit.
If we imagine a study where the users have never had either I.V. caffeine nor cocaine, well, how are you supposed to reliably distinguish between two stimulants hitting your heart and brain directly, without passing through any sort of blood brain barrier, when having that experience for the first time?
Now, it would be a useless study for us. But not useless for the chucklehead who padded his or her CV with it.