The POUR Principle Behind an Auto-Advancing Carousel Bug
A homepage carousel auto-advances to the next slide every 3 seconds, with no pause, stop, or hide control anywhere on the page. A user who reads slowly, or has a motor impairment that makes clicking in a tight window difficult, can never finish a slide before it's replaced.
Which WCAG POUR principle is this violating?
The correct answer is "Operable."
Operable means interface components and navigation must be operable by the user — SC 2.2.1 (Timing Adjustable) specifically requires that time limits like an auto-advancing carousel be extendable, pausable, or removable, not just "generous." A carousel with no pause control locks out exactly the users that requirement exists to protect.
Perceivable is about whether content can be sensed at all, but the slide content is visible — the problem is control, not perception. Understandable is about clarity, not timing control. Robust concerns consistent interpretation across assistive tech, unrelated to a missing pause button.
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