The bough creaked and swayed in a nasty fashion, and it didn't do to think of the drop below, but at last I got safely to where I wanted to be.
I would certainly die if I fell that far.  
mnli hypothesis: I would certainly die if I fell that far.   premise: The bough creaked and swayed in a nasty fashion, and it didn't do to think of the drop below, but at last I got safely to where I wanted to be.