Engineering the Perfect Psychedelic

The Atlantic - Technology 

Nature is always performing chemistry experiments, and in the dark and sticky corners of its forests and jungles, it creates compounds that have hyper-specific effects on the human mind. Many people of different ages and cultural backgrounds have eaten this mushroom and experienced the same hallucination. They report seeing elf-like figures that parkour around on clothes, on furniture, and on walls. These little people seem to like dancing and performing acrobatics. Large groups of them will march in formation. This "lilliputian hallucination" can last for a day, and closing your eyes is no escape.