They've learned an approximation of what stuff looks like projected into 2D. My guess is that your brain is creeped out by an uncanny-valley-like effect. The i

They've learned an approximation of what stuff looks like projected into 2D. My guess is that your brain is creeped out by an uncanny-valley-like effect. The images are plausible in their structure so part of your visual system is happy, but the causality is not there, so your brain is thrashing around looking for meaning that is missing.