His overall perspective is sure and clear and valuable.
But on the whole, "The Arab Shia" makes a clear and valuable point.
It is less clear how valuable a super PAC would be for candidates who depend primarily on small donors.
"These sites serve a clear and valuable purpose," Owen Gleiberman, who reviews for Entertainment Weekly, wrote in an e-mail exchange last week.
It is less clear how valuable, successful or even useful a Super PAC would be for candidates who raise money primarily from small donors.
For now, it's not clear how valuable this new addition to Google's arsenal will be.
Tom Linebarger, CEO of Cummins, in his interview for my book Driving the Future made clear how valuable such EPA regulations can be in pushing the industry forward by "helping us innovate and be ahead of the competition, and grow overseas markets".
Systematic studies are required in this field to develop clear, clinically valuable standards.
In contrast to the clear and valuable therapeutic options, the diagnosis of suspected early-onset neonatal sepsis is challenging.
A major concern is that it is not clear what valuable information can be acquired from amino acid composition data.
