Hmmm ... In 1982 I heard a talk by Edsger Dijkstra given at my company. As he stepped up to the overhead projector he said "I asked for 20 feet of blackboard,

Hmmm ... In 1982 I heard a talk by Edsger Dijkstra given at my company. As he stepped up to the overhead projector he said "I asked for 20 feet of blackboard, and I got this ..." As a (former) presenter, I found myself constantly struggling to figure out how to get what I wanted to say onto a slide. I'm going to say, I want a projector that can project on to a wall 10 feet high (although I'd probably only use the top five feet) and 15 feet across. I personally have bad eyes, and don't want to resort to anything less than really easy to read text size. It's not just powerpoint, but the physical infrastructure that becomes standard support for powerpoint that becomes the enemy of deep, complex ideas.