The Arizona Republic

I wish I had metadata on what really makes snow white

- VALLEY 101 During all the coverage of this business of government surveillan­ce, I keep hearing and reading the word “metadata.” I understand a prefix such as “mega,” but what does the “meta” prefix mean? reflects Reach Thompson at clay.thompson@ arizon

Clay Thompson

Today’s question:

Sometimes I think reporters, including myself, use words such as metadata just because they make us sound like somebody who knows a lot.

Meta- is a Greek word that means higher, or beyond. Think metaphysic­s or metabolism.

So metadata more or less means data about data — data gathered from the study of other data.

For example, if you were dealing with a text document, its metadata might include the document’s length, the author, the date of its origin and maybe a short summary of the contents. As for surveillan­ce, metadata might include what number called what number or frequency or length of calls.

In other words, metadata is pretty much stuff about stuff.

Next, a somewhat embarrassi­ng bit of housekeepi­ng.

In a column last week, some knucklehea­d wrote that the reason snow is white is because it absorbs all the colors of the spectrum. Any fourth-grader can tell you that this is balderdash and, in fact, a couple of fourth-graders have.

As we all know — or maybe most of us — snow is white because it all the colors of the spectrum.

Anyway, the Valley 101 security staff, my dog, Dumb, has launched an extensive internal investigat­ion to find the nincompoop responsibl­e for this mistake. The list of suspects is somewhat short.

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