For example, Freeman has view the Middle East through the prism of one of Foggy Bottom's most successful Arabists.

CENTERFORSECURITYPOLICY: Garbage in, garbage out

Three firms are currently bidding for the chance to operate the service - one of which is Prism Rail who holds two of the franchises, Wales and West and the Cardiff Railway Company.

BBC: News Online

And summits such as these, where 33 countries participate, each one bringing to the table their own interest, each one bringing their own prism through which they look at things, but the positive thing is that we discuss these issues candidly and productively -- a number of issues that were not even on the table before.

WHITEHOUSE: President Obama and President Santos Hold a Press Conference | The White House

Unfortunately, far from instilling confidence, Dr. Rice's throw-away line about her arms control pedigree offers a prism through which one can see clearly what increasingly is wrong with American foreign policy, over which she exercises virtually unchallenged sway.

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"What we mean by this is the way in which the athletes are going to be seen not as whole people, but as supermen and women, only reflected through the prism of this one aspect of their lives, " she explained.

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Looking at the change through the prism of Westminster, it is likely to be chalked up as one of the most significant constitutional changes during the coalition's time in government.

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When you view the Microsoft spot through the prism of that sound link you see it for what it is: one nearly continuous tap into our primal desires for security.

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