Český klub skeptiků Sisyfos (English: Czech Skeptics' Club Sisyfos) is a Czech skeptical nonprofit organisation founded in 1994, headquartered in Prague. Its primary goal and mission is to spread and defend the findings and results of contemporary science, to promote rational, critical thinking, to acquaint the public with the principles of scientific method, to speak out against the spread of paranormal ideas and unproven procedures, to ensure that universities, scientific societies and institutions are actively responsible for defending science and critical thinking, to investigate controversies and false claims, to provide assistance to citizens in protecting against fraudulent products and ineffective or dangerous alternative medicine products and healing methods. In line with mission