Saying I do not know on the air · Proposed air date:
When caller Tom asks whether a PDF can be made viewable but impossible to print, Dr. Dave refuses to pretend certainty. He says plainly that he does not know, explains the limit of his current knowledge and promises to research the question during the break.
This excerpt runs from 8:12.322 to 9:11.742 within its preserved source recording.
Proposed recording date: 2006-01-21. The exact broadcast date may differ.
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