That's an interesting point!
> But Politico has a strong incentive to protect their source. By making their own scan from a paper original, they wouldn’t open themselves up to the disclosures of confidential information that have tripped up others. (That said, printed documents are not necessarily free of metadata, as Reality Winner found out the hard way.)
If you color-scan a printed document at low-enough resolution, will it corrupt the color-printer dot patterns or are they resilient to that?
> I conclude it must be someone who only had access to a stapled, printed copy of the draft opinion. (If the person had access to the underlying digital file, they wouldn’t have printed & stapled it just to unstaple it.)
IMHO, the author is reading too much into that and many other things. The impression I get is he already has a favored suspect (who is obvious though he doesn't name her), and his whole analysis is looking to find a path to finger that person.
It's totally plausible to me that a moderately savvy leaker with a digital file would leak a printed copy to protect themselves from metadata, and that Politico just used lesser equipment that the author assumes they would have. Quick and dirty is more often the rule than careful and perfect.
Even the meaning of the staple may be very unclear: at work I print everything stapled, because I set it as a default in my print settings. If for some reason I realize I don't want it, it's actually easier for me to remove it than to go back to my desk to print another copy after changing the setting and go back to the printer.