Photos: Keith Brander (cropped)

The Soil Organism Psycho Test

The soil and the dark depths of the earth are teeming with life. Thousands of tiny and microscopic organisms metabolize organic matter, eat each other or live in symbiosis with plants.
The Soil Organism Psycho Test helps people find their way through this diversity. By answering a few questions, you can identify the organism closest to you by looking through the device's eyepiece.
The eyepiece sits on a turntable that rotates as you answer the first question. Depending on your answer, the result is either given immediately or only after answering more questions by pushing in or pulling out handles. Typically, you answer the top questions first and continue downwards.