Snooker surroundings or in public snooker halls. The game can also be played on smaller tables using fewer red balls. The variants in table size are: 10 ft × 5 ft, 9 ft × 4.5 ft, 8 ft × 4 ft, 6 ft × 3 ft (the smallest for realistic play) and 4 ft × 2 ft. Smaller tables can come in a variety of styles, such as fold-away or dining-table convertible. A traditional snooker scoreboard resembles an abacus, and records units, tens and hundreds via horizontal sliding pointers. They are typically attached to a wall by the snooker table. A
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: