From one to another

A slide transition reveals the next slide with some sort of motion or gradual process.
The new slide might move in from one side or gradually fade into view. It could be revealed in parts like blinds opening or in strips or wheel spokes.
When you advance to a new slide in your presentation, you would like for the audience to notice!
Sometimes neighboring slides look a lot alike, as do the Goals slides in the Anniversary presentation. It can be confusing to a person who wasn't looking at the screen when you changed the slides. Using a transition will make it clearer that something has changed.