World Robot Olympiad World Robot Olympiad The World Robot Olympiad (WRO) is a global robotics competition for young people. The World Robot Olympiad competition uses Lego Mindstorms manufactured by LEGO Education. First held in 2004 in Singapore, it now attracts more than 20,000 teams from nearly 60 countries. The competition consists of 4 different categories, Regular, College, Open and Soccer and for the Regular and Open categories, it consists of three different age groups: Elementary, Junior High and Senior High. Participants below the age of 13 are considered as Elementary, participants from ages 13 until 16 years old are considered Junior High and
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: