"In the 1960s, Walter Pahnke scrupulously followed the formula for an ointment appearing in a fifteenth-century book and then experimented, along with other colleagues, by smearing it on the area of the neck and armpits. All the researchers reported having been plunged into 'a twenty-four-hour sleep during which they dreamed of daredevil flights, frenetic dancing and other strange adventures similar to those that took place during medieval orgies"