His sixth year, it seemed to him, had lasted a remarkably long time and there were points at which he frankly wondered whether he would ever turn seven. But now it was the night before his birthday, and barring some cosmic disaster, the advent of some unexpected black hole into which the earth might be sucked, with the attendant reversal or suspension of time, in very few hours he would be waking up to a world in which he was numbered among the seven-year-olds.