Icosathlon Icosathlon The icosathlon, also called the double decathlon, is an ultra multi-event of track and field competition consisting of 20 events contested over two days. There is an extra rule, that each day should contain a pause of one hour. Mostly the competition is held over two days, but one-day icosathlons also exist. The first day of the standard icosathlon includes: On the second day of the standard icosathlon, the following events are contested: Each event is scored according to the decathlon scoring tables or, for non-decathlon events, the IAAF points tables. At the conclusion of each icosathlon, the competitor
Essentially contested concept substantive disagreements over a range of different, entirely reasonable (although perhaps mistaken) interpretations of a mutually-agreed-upon archetypical notion, such as the legal precept "treat like cases alike; and treat different cases differently", with "each party [continuing] to defend its case with what it claims to be convincing arguments, evidence and other forms of justification". Gallie speaks of how "This picture is painted in oils" can be successfully contested if the work is actually painted in tempera; while "This picture is a work of art" may meet strong opposition due to disputes over what "work of art" denotes. He suggests three