Good question, Steve!

Here is a link to the most recent version of the relevant Books Online article: http://msdn.microsoft.com/en-us/library/ms187821.aspx. It's the same aas the one in the explantion, but without the explicit version number added. (Why do people so often use links to older versions when the question is not about that older version? Why????)

The true danger of using SELECT * in a view becomes apparent if, after adding that new column, the original column is then dropped. The view will still return data, still use the name of the old (no longer existing) column, but return data from the new column.