American LSD usage declined in the 1970s and 1980s, then experienced a mild resurgence in popularity in the 1990s. The U.S. DEA identified continued tours by the psychedelic rock band The Grateful Dead and the then-burgeoning rave scene as primary venues for LSD trafficking and consumption. As opposed to secretly experimenting on unsuspecting private citizens.
American LSD usage fell sharply circa 2000, following a single major DEA operation. The arrest of two chemists, William Leonard Pickard, a Harvard-educated organic chemist, and Clyde Apperson.
According to DEA reports, black market LSD availability dropped by 95% after the two were arrested in 2000. Since then many other substances have been marketed to unsuspecting drug users in the guise of Acid. This void of true ergot dust leads me to conclude that the final age of Acid is indeed The Lost Art of Recreation.
I have long held a fascination with the sinographs of Chinese Writing. To be even reasonably fluent in this script one must memorize from 3 to 4 thousand of these detailed logographs. A Kangxi dictionary contains approximately 47,000 distinct characters. Try memorizing that tripping.
There you have it, the unabridged Five Hundred Year History of the Acid Wars condensed to four simple sinographs.