It is true that both pictures and words are important, and they both play complementary roles. If you had to choose just one of them; then seeing is a much more important part of presenting. Presentations, by their very nature, are meant to be seen since they evoke actions such as project, display, or broadcast; and all of these actions represent visual media. Text and speaking are important too, but you can be more effectively heard and remembered if your content includes both text and pictures. Adding pictures to your PowerPoint 2016 slide is a great way to add some visual detail.