During a recent visit, it was clear that for every marijuana seller and physician who thinks that the rules are too strict, murky or fluid, there are others who can hardly wipe the smile off their faces.

“When I visited in September, I looked around and saw that there were only four dispensaries in Boulder, and they were all right on campus,” says Bradley Melshenker, co-owner of the Greenest Green and formerly a medical marijuana seller in Los Angeles. “We went into one and saw like 30 kids in the waiting room, and I thought: ‘This is crazy. We’ve got to come.’ ”

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With a couple of exceptions — Mr. Bellingham among them — interviewing pot sellers is unlike interviewing anyone else in business. Simple yes-or-no questions yield 10-minute soliloquies. Words are coined on the spot, like “refudiate,” and regular words are used in ways that make sense only in context. One guy kept saying “rue” as though it meant “reluctant,” as in “I think the state was rue to act.”

David Segal on medicinal marijuana in the NYT