[JumpCrisscross]

> What voodoo have they unearthed?

Curious for the take not of a neuro-ophthalmologist. If they too are stumped, this may be a path to a deeper understanding our visual system.

Simple transformations obviously discernible to us blind computer vision. (CAPTCHAs.) There may be analogs for human vision which don’t present in the natural world. Evidence of such artefacts would partially validate our current path for artificial intelligence, as it suggests the aforementioned failures of our primitive AIs have analogs in our own.