The project SOD, for Spiders On Drugs, is based on the results of a NASA experiment.
This experiment was designed to study the influence of certain psychoactive substances on the behavior of living things. The researchers administered the test substances (marijuana, caffeine, benzedrine and chloral hydrate) to spiders and then let them weave their webs.
These bowls were designed to replicate the web patterns woven by spiders who were under the influence of certain psychoactive substances in the experiment.
