Fighting the clicker wars

摘要

I've given enough clinics to have had just about every technical problem in the known universe come to visit me at the most inopportune time. Back in the 35mm slide days, I could depend on a slide not to drop from a Kodak Carousel tray if the projector was tilted up at more than a shallow angle. And we presenters got very good at changing the very hot burned-out bulbs in projectors mid-presentation.