It’s great fun being a grandpa. Yet after five years in the role, and after officially becoming a grandpa for the fourth time a few days ago, it’s still hard for me to believe that I’m old enough to be a grandpa. I keep thinking of my own grandfather–is that me now? And I can’t help reflecting on the seven ages of man soliloquy from Shakespeare’s As You Like It. If “all the world’s a stage,” does becoming a grandpa immediately put me in the “lean and slippered pantaloon” phase of stage six? Surely not yet? Though at times I do find myself “with spectacles on nose” when I go to read a map…