After all, squirrels think that the birdseed is for them and there's no power on earth that will convince them otherwise.

Since the Internet was developed in 1987 it, more than any single other instrument, has improved our capability to thwart squirrels by facilitating the rapid exchange of information about squirrels.  Information can be transferred through the Net faster than squirrels can run.  Although there have been reports of squirrels chewing through phone lines to sabotage our lines of communications, I don't think that squirrels have yet learned how valuable the Internet has become.  (One Netzian disagreed.  To one of my queries he wrote, "Go ahead.  Put all your best tricks on the Internet where the International Squirrels Who Raid Birdfeeders Association can download them for research in ways to overcome them!")  (Author's Notes on the Second Edition, p.xvii)

It was at this point that I asked Dr. Flyger, "Have you ever been bitten?"   That's kind of a rhetorical question, of course, for a man who studies squirrels, but I had to ask.  Flyger responded.  "Oh, yes.  But it's not too bad.  It's a relative thing.  After all, I used to work with polar bears."  (Chapter Three, "Know the Enemy", p.53)