young people are indifferent about saving for retirement; they feel as if they would be giving up their money to an elderly stranger.

One can see a version of clashing multiple selves in the mental illness known as dissociative-identity disorder, which used to be called multiple-personality disorder. This is familiar to everyone from the dramatic scenes in movies in which an actor is one person, and then he or she contorts or coughs or shakes the head, and—boom!—another person comes into existence. (My own favorite is Edward Norton in Primal Fear, although—spoiler alert—he turns out in the end to be faking.)

Dissociative-identity disorder is controversial. It used to be rarely diagnosed, then the number of reported cases spiked dramatically in the 1980s, particularly in North America. The spike has manyThursday will mark the anniversary of the deadly attacks on the French satirical magazine Charlie Hebdo, which has released a special cover that blasts religious extremism.

"One year later: The assassin still at large," the cover reads.

The cartoon features a godlike figure that is covered in blood carrying a machine gun. According to Business Insider, one million copies of the edition will go on sale on Wednesday. It will feature cartoons drawn by the murdered cartoonists, who were killed when Charlie Hebdo's headquarters were attacked last Jan. 7 by members of ISIS in response to illustrations in the magazine that spoofed the Prophet Muhammad. Twelve people were killed in the attack.

A week later, Charlie Hebdo released an eight-page edition in 16 different languages with a cover featuring the Prophet