"Randy was forever telling people, without rancor, that they were full of shit. That was the only way to get anything done in hacking. No one took it personally.
Charlene's crowd most definitely did take it personally. It wasn't being told that they were wrong that offended them, though - it was the underlying assumption that a person could be right or wrong about anything. So on the Night in Question - the night of Avi's fateful call - Randy had done what he usually did, which was to withdraw from the conversation. In the Tolkien, not the endocrinological or Snow White sense, Randy is a Dwarf. Tolkien's Dwarves were stout, taciturn, vaguely magical characters who spent a lot of time in the dark hammering out beautiful things, e.g. Rings of Power. Thinking of himself as a Dwarf who had hung up his war-ax for a while to go sojourning in the Shire, where he was surrounded by squabbling Hobbits (i.e., Charlene's friends), had actually done a lot for Randy's peace of mind over the years. He knew perfectly well that if he were stuck in academia these people, and the things they said, would seem momentous to him. But where he came from, nobody had been taking these people seriously for years. So he just withdrew from the conversation and drank his wine and looked out over the Pacific surf and tried not to do anything really obvious like shaking his head and rolling his eyes.
....
A Dwarf on sojourn in the Shire would probably go to a lot of dinner parties where pompous boring Hobbits would hold forth like this. This Dwarf would view the whole thing as entertainment. He would know that he could always go back out into the real world, so much vaster and more complex than these Hobbits imagined, and slay a few Trolls and remind himself of what really mattered."

-Neal Stephenson, Cryptonomicon