On Sun, Oct 23, 2011 at 8:21 PM, Larry Masinter <masin...@adobe.com> wrote:
>> - in which way is it more certain that there is no mislabeled PDF than a 
>> mislabeled jpg or mislabeled rtf?
>
> I don't think this is relevant. There is likely mislabeled PDF. But I had 
> specific feedback from implementors of PDF readers that sniffing from other 
> content-type resulted in a worse situation than not sniffing. I don't have 
> any information on jpg or rtf.
>
> Sniffing should only be done when it is justified by an improved user 
> experience over not sniffing.

That seems very anecdotal.  Do you have data to back up these claims?

Adam
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