[brobdingnagians]

Maybe it is a smoke screen, put in something likely to be found and something that won't. Everyone pats themselves on the back for finding the obvious one...

[nkrisc]

Why not just include the thing that won't be found and call it a day?

Including a red herring to invite extra scrutiny doesn't seem wise if you're trying to hide something.

[flingo]

Step 1: Get 3 pigs. Step 2: Number them 1, 2, and 4. ...

[gvjddbnvdrbv]

This seems highly likely.