Should I use 16:9 vs 4:3 for my presentation?

Should I use 16:9 vs 4:3 for my presentation?

You open up PowerPoint or Keynote, and the first thing you have to do is choose a slide size. You’ll see two or maybe three options to pick from, but which one should you use? Well, here’s the simple Cliff Notes version to help make a decision on if you should...