Such forecasts cannot be validated empirically and are contentious, but are useful for comparison. Such forecasts cannot be validated empirically and remain contentious, but are useful for comparisons. However, few rapid assessment methods have been fully validated. There is controversy about whether these tests have been properly validated. The test must be validated once complete to ensure the results are meaningful. This is not yet fully validated. Those claims have not been validated by scientific research. Most of these findings have been independently validated by retrotransposon presence/absence data. Results are also validated with the relevant government before publication. The components that Tart identified have not, however, been validated by empirical studies. This hypothesis however could not be validated with a larger data set. The series presented anecdotes and experiences in place of scientifically validated facts. This test has not been validated in adults. However, some results are partly validated with an increasing number of experimental results. If the software meets the requirement specification, it has been internally validated.