Must read: Friend who received last e-mail from Loughner speaks

Loughner would occasionally mention Giffords, according to Tierney: “It wasn’t a day-in, day-out thing, but maybe once in a while, if Giffords did something that was ridiculous or passed some stupid law or did something stupid, he related that to people. But the thing I remember most is just that question. I don’t remember him stalking her or anything.” Tierney notes that Loughner did not display any specific political or ideological bent: “It wasn’t like he was in a certain party or went to rallies…It’s not like he’d go on political rants.” But Loughner did, according to Tierney, believe that government is “fucking us over.” He never heard Loughner vent about about the perils of “currency,” as Loughner did on one YouTube video he created…

As Loughner and Tierney grew closer, Tierney got used to spending the first ten minutes or so of every day together arguing with Loughner’s “nihilist” view of the world. “By the time he was 19 or 20, he was really fascinated with semantics and how the world is really nothing—illusion,” Tierney says. Once, Tierney recalls, Loughner told him, “I’m pretty sure I’ve come to the conclusion that words mean nothing.” Loughner would also tell Tierney and his friends that life “means nothing,” and they’d reply, “If it means nothing, what you’re saying means nothing.” Other times, Tierney says, Loughner acted like any teen: “We’d go to concerts, play music, get into trouble.”…

Since hearing of the rampage, Tierney has been trying to figure out why Loughner did what he allegedly did. “More chaos, maybe,” he says. “I think the reason he did it was mainly to just promote chaos. He wanted the media to freak out about this whole thing. He wanted exactly what’s happening. He wants all of that.” Tierney thinks that Loughner’s mindset was like the Joker in the most recent Batman movie: “He fucks things up to fuck shit up, there’s no rhyme or reason, he wants to watch the world burn. He probably wanted to take everyone out of their monotonous lives: ‘Another Saturday, going to go get groceries’—to take people out of these norms that he thought society had trapped us in.”