What would you like to know? I can make/build a fire and don't need the knife to do it. I can build shelter and don't need the knife to do it either. However, if I would like to improve my shelter and make solidly built then I will require a knife to do so. Not to mention, I would rather use a knife to make really sharp and pointy things which can kill and catch animals, which I then could carve up and eat with my knife.
Eliminating any manner of 'trick' answers (like a boat or telephone) enabling me to affect an escape, but assuming the question asks what is the one thing, if there could be only one, that you could have with you to pursue or enjoy for the rest of your life, my first thought was a guitar . . . but pondering the reality of having only one thing, one source, one input to pursue or enjoy a bit longer, I think I would take a set of Calvin's complete commentary on the Bible that includes his 'Institutes'. That way I would get the actual text of Scripture plus the comments and systematized implications of the text from one of the greatest minds and most devout believers ever. Of course, my choice is kind of suggestive of the seriousness, wordiness, and probably commonly perceived lameness of my answer.
A freezer the size of a truck, that is full of chocolate and Ben and Jerry's NY Chocolate Chunk ice cream, and comes with its own emergency energy source whether that's gasoline or batteries that last a whole year.
And yes I realize it's a desert island not a dessert island.
How about a reverse microwave that makes things freezing really quickly, with a button on it that opens a portal, with the other end of this portal being situated in the truck of which you speak. Dessert island lol
So let's check a bit of your personality and imagination!If you went to a desert island and you could take one (and only ONE!) item with you, what would you take?Myself would bring a cellphone with gps and hope for it...