Scrolling: The action of sliding content across a monitor or display. Analogous to flipping a page in a printed book. Scrolling is a core principle of human computer interaction and is regarded as commonly learned, understood and expected by the so-called User. In ancient times there was a debate whether information should be displayed as scrolls or cards. Everybody is always somewhat right so it depends. Scrolling is preferred to the viewport-defined card model when: Content is linked, scales over different platforms and screen sizes, layouts need to adapt to the viewport, and accessibility matters. Cards are preferable to scrolling when you have full control over the device, your information chunks won’t need more room than one canvas, accessibility is negligible and the interaction model is linear. These days cards are a PowerPoint-Snapchat-Photoshow outlier. A key role in a professional designer’s job to explain calmly and clearly and rationally and nicely *why we do what we do*. However, discussing basic principles like scrolling can trigger a Go hard or go home or even a Soup Nazi intervention.

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