The biggest I've seen in a published source in the wild is an 80-fold error in a reported distance, which I think came from a series of at least three unit conversions and area/length misinterpretations.
If you have an old phone in a drawer, and you listen very carefully, you can occasionally hear the occasional tap of an emitted SIM card hitting the side of the drawer as the phone transmutes to a lower-end model.
It's important to learn the moves that take you into the vortex, but it's best not to study vortex itself too closely. Even grandmasters who have built up a tolerance lose the ability to play for a few hours after studying it.
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