What did von Petzinger find in her studies on geometric signs? Briefly describe some key points.

Paleoanthropologist Genevieve von Petzinger studied rock art sites across Europe and discovered that Ice Age Europeans employed just 32 distinct geometric sign types from 40,000 to 10,000 years ago. The preliminary findings took her by surprise. ... It suggested instead that the signs' origins lay somewhere else.

BTW this was from google

Explanation:

i think this is true

photography had emerged as an elite art pursued by a few creative individuals for a few wealthy patrons. but now, said bauldelaire, it was succumbing to "the great industrial madness of our times." it was becoming a mass production industry that catered to middle-class tastes, including a taste for gadgetry. the stereoscope, the first 3d imaging system, had turned looking at photographs into parlor entertainment. a "thousand hungry eyes were bending over the peepholes of the stereoscope as though they were the attic-windows of the infinite.