For one thing, the central narrative we've been provided of the Boston Marathon bombing makes little sense.

Take the defendant's past. It provides few clues to suggest that Dzhokhar Tsarnaev might have been inclined to commit any sort of mayhem, much less on a massive scale. Even his now-dead, more aggressive older brother, Tamerlan, doesn't exactly seem like the sort to prepare and detonate bombs to harm large numbers of innocent fellow Bostonians.

Furthermore, neither brother is known to have had the expertise to make the explosive devices unleashed at the Marathon, which experts have characterized as sophisticated. They also aren't known to have the sort of experience or practiced skill with guns or incendiary devices of the sort they're described as deploying—with ruthless bravado—during a protracted face-off with large numbers of experienced, heavily armed law enforcement officers, some of whom had military training.