In early April, Times Executive Editor Bill Keller (photo courtesy of the New York Times) discussed his recent book "The Tree Shaker: The Story of Nelson Mandela," a children's book on the life of the South African leader Nelson, on the Times' "Ask A Reporter" site.

The project is aimed at schoolchildren, who submit questions to selected Times reporters about the job of reporting. The reporters generally respond with bland, follow-your-dreams stuff to the audience of aspiring journalists or curious students, but Keller's response to one student's question might raise some eyebrows.

A New York City 12th grader asked Keller:

"What do you think of the analogy between apartheid South Africa and Israel-Palestine? I remember hearing about a lot of controversy last year regarding Jimmy Carter's book, 'Peace Not Apartheid.'"

Keller responded in a post dated April 4 by saying that one has to be careful with analogies, but also suggested that that one had some validity: