He oversaw a team of 120 mathematicians, scientists and statisticians. One was made up of statisticians, the other of biologists. Such results can be of practical value for statisticians and other scientists. These supporters include statisticians and philosophers of science. The "proof" has been disputed by statisticians and philosophers. Many statisticians besides Elo have devised similar methods to retrospectively rate players. BMRB's methodology and data collection system have been criticised by other chart statisticians. This is the meaning intended by statisticians when they say causation is not certain. The belief of many statisticians that classical methods are robust may be another reason. The MBBK paper was reviewed anonymously by four professional statisticians prior to publication. Unofficial records for some other events are kept by track and field statisticians. However, this use is not standard among probabilists and statisticians. In 1962 Birnbaum "proved" the likelihood principle from premises acceptable to most statisticians. Ideally, statisticians compile data about the entire population (an operation called census). All information from Association of Road Racing Statisticians.