Describe the adult way of thinking in the story the lumber room by Saki. pls I need answers

the author is trying to demonstrate how adults often believe they are wiser than children based solely upon their age, not their intellect.

Explanation:

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.

lithograph is created by etching the flat surface of a print.