““What happened next transfixed many readers. (Jeffrey Lewis, an arms expert in California, captured and posted the exchange online.) “I can’t find the chemical and physical properties of sarin gas [sic] someone please help me,” the student tweeted. Kaszeta offered his help. He corrected her by noting that Sarin isn’t a gas and that the word should be capitalized. As Lewis later wryly noted, “Dan’s help [met] with a welcome sigh of relief from our beleaguered student.” Actually, it met with a string of expletives. The student lectured the expert in a gale-force storm of outraged ego: “yes the [expletive] it is a gas you ignorant [expletive]. sarin is a liquid & can evaporate … shut the [expletive] up.” Kaszeta, clearly stunned, tried one more time: “Google me. I’m an expert on Sarin. Sorry for offering to help.” Things did not improve before the exchange finally ended. One””