Above is a Rorschach inkblot, used for decades in psychological assessment exercises as a means of examining personality characteristics and emotional function.
Hermann Rorschach, the Swiss psychiatrist who was born on this day in 1884 and who invented the inkblot test, originally intended it as a tool for diagnosing schizophrenia.
Below are projected images of the Earth, should all ice caps melt in the long term. Reaction to them could be used, much like the inkblot test, to determine certain functions.
Do they make the viewer want to do something about rising global temperatures, do they inspire resignation, or are they dismissed as a pointless exercise?