But by studying these dark bursts at various wavelengths simultaneously, Greiner and his team found that absorption by dust is the only viable explanation in most cases.
The performance of unattractive intermediate phenotypes is not a viable explanation, because most of the sterility results from a failure to perform courtship, not from an inability to stimulate female receptivity.
The hypothesis that these variations in intensity are caused by light being absorbed when passing through cosmic dust is no longer considered a viable explanation because the most distant supernova yet discovered is brighter than it should be if dust were the responsible factor (Sincell).
If the allele identified is large (>100 repeats), the third explanation may be the most viable, especially if the parent of the patient also carries a large pre or full mutation allele.
That unprecedented volatility has a fairly clear explanation: Though most Republican voters have long perceived Mitt Romney as their most viable general election candidate, a significant share of conservative Republicans have been searching for a more conservative alternative.
Human error was the only politically viable explanation.
I don't think there's any viable explanation".
It's the only viable explanation for this horror show from Murray.
The most viable alternative approach requires hours of study.
