In this edition of Spark, recorded at the Miami Book Fair, Eric Bogosian recounts how he recently asked if wife if they could play with crayons. He remembers how he felt the first time he read lines in a play (Shakespeare; he says it was "painful" but in a good way). He tells us how an idea for a screenplay he thought would take three months, eight or nine years later became his new non-fiction book, "Operation Nemesis: The Assassination Plot that Avenged the Armenian Genocide." He takes us back