In a Pickle (card game) of or underneath a pile, the player then draws a card from the stack of unused cards to replenish their hand. The rule book encourages players to be creative when placing cards; one possible creative play is to place "universe" beneath "dictionary", as the word "universe" can be found in a dictionary. If a player cannot or chooses not to play a card, they may exchange up to three cards from their hand for the same number of cards from the pile of unused cards before ending their turn. Once the fourth card is placed in any of the four
How many angels can dance on the head of a pin? about how many could perch at the same time on the head of a pin"". Dorothy L. Sayers argued that the question was "simply a debating exercise" and that the answer "usually adjudged correct" was stated as, "Angels are pure intelligences, not material, but limited, so that they have location in space, but not extension." Sayers compares the question to that of how many people's thoughts can be concentrated upon a particular pin at the same time. She concludes that infinitely many angels can be located on the head of a pin, since they do not occupy any space there: