You've done the process a hundred times. You know exactly how it works, every click, every workaround, every "oh yeah, don't forget this part." But the moment someone asks you to document it? Suddenly an afternoon disappears into bullet points and screenshots that still don't capture the nuance.
What used to take hours of writing and formatting now takes minutes of recording plus one well-crafted prompt. And because Gemini can actually see what you're doing on screen (not just hear you describe it), the resulting documentation captures details you might have glossed over.