Stumbled upon myths and brain storms

Read Borges's Labyrinth about Theseus last night (in Spanish and English for comparison and education purposes).  In Borges's version the  Minotaur is incidental. As I am unfamiliar with  the details of these myths I made a note to look it up in the morning.

Today, first thing, I looked up the myths. The ball of thread Theseus used to find his way to the center of the labyrinth and, after killing the Minotaur, back out to his world was called a clewe. I got fixated on that word.
This is the  story of my life, now, and probably was in the past too, but I do not recall all of the past.
Looked up clewe. It is a ball of string or yarn. Ariadne's thread means logic. Can't find out if that is an origin of the use of the word clue as an aid in solving a problem. I have seen it spelled clew in English stories.
 My brain is working slowly, along with my fingers and my legs and everything else I got. Also, my functions start out barely perceptible in the AM and my body is achy and difficult to raise and too sore to leave in bed.

So finally I come to this:

While Theseus is worried about slaying the beast, he is also concerned that he will become lost in the Labyrinth and not be able to find the door again. Just then, Ariadne, a princess who has fallen in love with Theseus, comes to his side. She offers him a ball of string and tells him to unwind it as he walks into the Labyrinth and then follow it back out. Ariadne's simple gift gives Theseus the assurance he needs, and he is able to slay the Minotaur and find the door to freedom.

This hero myth became so well known that Ariadne's ball of yarn—called a "clew" in Old English—became synonymous with anything that helped to solve a problem. Over time, the spelling of the word changed to "clue."

Thus reminding me once again that there is nothing new under the sun and that I am dumb as a box of hairpins and uneducated to boot.

More commonly, on a triangular sail, the clew is the trailing corner relative to the wind direction, but it is a string on most if not all sails, also trailing in relation to wind direction. For me to understand all that I have read about sails, strings, clewes would require a whole new study of parts of a boat. Very complicated. Can't focus any more now.
Today PM. Edited some, head still foggy, but better. This stuff is for my info, in case I decide to research and try to repair my life, but I suspect it is too far gone. 
Although it does occur to me vaguely that this whole experience after reading Borges's story is a form of  use of Ariadne's Thread. This from wiki: through an exhaustive application of logic to all available routes. It is the particular method used that is able to follow completely through to trace steps or take point by point a series of found truths in a contingent, ordered search that reaches an end position. This process can take the form of a mental record, a physical marking, or even a philosophical debate; it is the process itself that assumes the name.
There is so much information out there in the world that I will never know, never know I do not know, etc. ad infinitum. Rather disheartening. I decide to go read a cereal box to distract myself.