Acoustic and Electric

There's a way of describing the difference between psilocybin mushrooms and LSD that clarifies something the pharmacology takes longer to reach: mushrooms are acoustic psychedelics, acid is electric. One is warm, earthy, a little muddy at the edges. The other is bright, high-fidelity, and slightly clinical, like everything has been plugged into an amp.

The comparison holds up better than it has any right to. Psilocybin, the active compound in the mushrooms, is close in structure to serotonin — so close that your body converts it to psilocin and it slots into the same receptors your own neurotransmitters use. It's a molecule your brain already half-recognises. LSD, by contrast, was synthesised in a Swiss lab in 1938 by Albert Hofmann, who was looking for a circulatory stimulant and shelved the compound for five years before absorbing a dose through his fingertips and cycling home in a state that gave us the term "bicycle day." One grew in a field; the other came off a bench.

The doses tell the same story. LSD is active in micrograms — millionths of a gram, so little you cannot see it. Mushrooms are weighed in grams, and if you want the truly obliterating experience, in ounces. The mathematics of eating your way to "ego death" via dried cubes runs into a practical wall: taste. Somewhere around 3.7 pounds of the things, the flavour becomes the trip's main obstacle.

"Ego death" is the phrase both camps reach for and neither fully explains. It's the dissolution of the sense of being a discrete self — the feeling, as one plausible account has it, of being stripped down to your DNA and rebuilt. Neuroscientists have a less poetic candidate for what's happening: the default mode network, the brain's self-referential background hum, goes quiet. The part of you that narrates you stops narrating. People tend to describe what follows as either the best or worst hour of their life, sometimes both.

Worth noting against the folklore: ego death is not the exclusive property of the mushroom crowd. LSD gets you there too, and it doesn't require a heroic dose. The chart wants clean categories. The molecules, once inside, are less tidy — which is roughly the point everyone comes back saying.