It doesn't have to be quick for bad effects. See https://discussions.apple.com/t... | Hacker News

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		viraptor on Feb 10, 2021 \| parent \| context \| favorite \| on: 20% of requests for Wikimedia Commons are for one ... It doesn't have to be quick for bad effects. See https://discussions.apple.com/thread/7908738 for example. I can't find the link now, but there was also an article about one of the older designers (IBM?) making sure the terminal cursor blinks in 1:2 ratio to reduce the problem. Just don't give random unsuspecting people blinking images as a rule.

EE84M3i on Feb 10, 2021 [–]

The first link says "several flashes per second". I was thinking more like a blink every few seconds, which seems to be annoying but not dangerous.

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