- The Austrian founder of psychoanalysis was born Sigismund Schlomo Freud in the town of Freiberg (now Pribor) in the Austro-Hungarian region of Moravia (Mähren, today in the Czech Republic) on May 6, 1856.
- Thought experiment (Wikipedia)
A thought experiment is a hypothetical situation in which a hypothesis, theory, or principle is laid out for the purpose of thinking through its consequences.