Complex sentence: Taken as a whole, the VAN method has been criticized as lacking consistency in the statistical testing of the validity of their hypotheses and in particular, there has been some contention over which catalog of seismic events to use in vetting predictions.
Split into simpler sentences: Taken as a whole, the VAN method has been criticized as lacking consistency in the statistical testing of the validity of their hypotheses. In particular, there has been some contention over which catalog of seismic events to use in vetting predictions.