Do I really need to dumb it down for you? Sigh. Oh, all right. Let's look at it again:
But if a mechanic stranded on a desert island after a shipwreck were to discover a fishing pole, a packet of vegetable seeds and some garden tools, and yet made no effort to find out who provided them, thinking that the provisions were enough in themselves to get him off the island, assuming he even cared to get off, I would conclude that we were dealing with a very foolish mechanic/scientist, particularly if attached to the fishing pole there were a lengthy but cryptic note from its provider indicating that within the note there were clues about the identity of the provider and how to contact him.
The mechanic is the foolishly apathetic atheistic scientist. The desert island is the universe in which he finds himself. The fishing pole, vegetable seeds and tools are the rich bounty of goods which our Creator has provided us for both our pleasure and our survival. The note is the scripture which He has providentially prepared for us, which if diligently and sincerely studied will give us knowledge as to His identity as well as guidance to His ultimate rescue.