Review the return you filed and your original source documents to compare with the information in the notice.

FORBES: IRS Notices & Letters: It's Stop the Machine Time Again

Now compare CDs to the way email and documents have been used in the workplace for the past 20 odd years.

FORBES: Is Your Job Still Playing on CDs?

Besides looking at ancient scrolls, the multispectral scanner can compare things like bank notes and passports with reference documents of known provenance.

ECONOMIST: Monitor

It is difficult to compare the two plans in detail because Bush has offered few specifics beyond the summaries contained in his campaign documents.

CNN: latimes.com: Gore, Bush drug plans -- debate keys on trust