If you add animations to slideshows, they should serve some semantic or rhetorical purpose. Animations should reduce cognitive load, not increase it by being a distraction. When should you add animations? I like adding animations to my presentations when they serve a purpose, but they need to be use intentionally. Animations can easily become a distraction when are there are too many of them or when they are too extreme. On the other extreme, sudden jumps between slides and figures can in som...

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