The cannibals won't just give it to you
They don't have a replacement...
And they don't know how to find a new one.
Perhaps you could enlighten them.
They want to get a head for navigating.
Maybe "Get Ahead in Navigating"?
Stan gave you many pamphlets.
"Get Ahead in Navigating" is one of them.
Give "Get Ahead in Navigating" to the cannibals, and they will give you the head.