Several factors have been identified as predispositions to accidents in technical diving. The techniques and equipment are complex, which increases the risk of errors or omissions - the task loading for a CCR diver during critical phases of a dive is greater than for open circuit scuba equipment, The circumstances of technical diving generally mean that errors or omissions are likely to have more serious consequences than in normal recreational diving, and there is a tendency towards competitiveness and risk-taking among many technical divers which appears to have contributed to some well-publicized accidents.