As a geezer your job description is to shamelessly spoil your grandkids. A trip to this year’s RoboGames should do the trick. See lots of bots doing astonishing feats – combat bots, humanoid bots, soccer bots, sumo bots, kung fu bots, even bartending bots. It’s April 23 to 25 at the San Mateo Fairgrounds. $20 for you. $7 for kids 7-17 and free for children 5 and under (how do they check their IDs?).