So now we will try to find out why.
You know what I think? I don't think these guys were particularly smart or trying to make a statement. I think they were just frustrated with their lives, and bored, like lots of young men in the world. I think the conversation went something like this.
"I have an idea. Let's blow up the Boston Marathon."
"Let's blow up the Boston Marathon. Nothing big. We'll make some bombs. There are instructions on the Internet, it looks easy. People will be scared. It'll be fun. Whaddya think?"
"Are you crazy?"
"Probably, man, probably."