Design the background to serve the foreground
We created this slide for a customer presentation, where initially, you see many plants, which then get grayed out, and the attention focuses on just one. What looks like a simple design technique (blurring or graying out background visuals) is actually a nod to a philosophical idea: Foreground is only meaningful because of background. We only recognize something as distinct when it's contrasted with what it is not. Think Heidegger's notion of "being" as only legible against "not-being" or silence as necessary for sound to be meaningful.
To communicate something clearly, show what it is, but then surround it with what it is not. Absence can define essence.
In addition, the choice of image matters. In this case, we could have selected any objects to blur in the background and isolate only one (umbrellas, tea cups, or shoes). We chose succulents because they thrive by focusing energy inward. They conserve water, and they are efficient. Like a succulent, great communication stores meaning in tight containers: Compact, elegant, and efficient, with nothing extra to drain attention. The image choice may seem aesthetic, but you can infuse it with meaning.