english: In fact, I used to argue with my professor, Richard Evan Shultes -- who is a man who sparked the psychedelic era with his discovery of the magic mushrooms in Mexico in the 1930s -- I used to argue that you couldn't classify these tryptamines as hallucinogenic because by the time you're under the effects there's no one home anymore to experience a hallucination. (Laughter) But the thing about tryptamines is they cannot be taken orally because they're denatured by an enzyme found naturally in the human gut called monoamine oxidase.
non_english: Zapravo, ranije sam se raspravljao sa mojim profesorom, Ričardom Evanom Šultsom, čovekom koji je izazvao psihodeličnu eru otkrićem magičnih pečurki u Meksiku 1930. Tvrdio sam da se ovi triptamini ne mogu klasifikovati u red halucinogena jer u vreme kad ste pod efektima nema nikog kod kuće ko bi doživeo tu halucinaciju. (Smeh) Ali stvar sa triptaminima je da se oni ne mogu uzimati oralno zato što ih razgrađuju enzimi koji su prirodni sastojak stomaka ljudi, a to su monoaminske oksidaze.