Reading is hard. It’s a cognitively demanding task. Be kind to your readers, and write well.

I’m not impressed by your 40 page essay, when it could have been written in four.

If you have too much text on your slides, your audience will be reading and not listening to you. Use pictures, or less than 30 words per slide.

This isn’t a new phenomenon caused by twitter either. This has been going on for centuries.