Several years ago, while digging through a box of old reporting files, I found a micro-cassette tape labeled “Iwata.” I’ve wondered for years what is on it. I figured it was a recording of one of the interviews I had conducted with the late Satoru Iwata, the revered game-developer-turned-Nintendo-president, who died in 2015. But I couldn’t find my old tape machine. Was the tape a record of the cha