Can we eat cell phones in the library?

This leaping, libertine librarian thinks that cell phones and food are okay in the public library.  Within reason!
If people are quietly texting in the corner, or if they are having a very quiet conversation, what's the problem?  Where's the beef?  On the other hand, if they have a big Mac with all the fixin's....stay at MacDonalds until you're finished, sweetheart!  And, please, do not spill coffee on the laptop!