According to the PRISM slides, the program costs $20 million per year. This article doesn't mention that, although it should, because it is telling. If the author believes that this program could be implemented at a minimum of $187 million per year, then that $20 million claim is problematic.<p>Either the $20 million claim is wrong, and then all the information on the slides is suspect, or it is correct, and the scope of PRISM is much smaller than is widely believed and is believed by the author of this article. Or the author of this article properly understands the scope and is in error in his calculation.