Hi all,

Just some free-association ideas of late.  The Italian for knot is "nodo," same as node and nexus:

node (n.)early 15c., "a knot or lump," from Latin nodus "knot" (from PIE root *ned- "to bind, tie"). Originally borrowed c. 1400 in Latin form, meaning "lump in the flesh." Meaning "point of intersection" (originally in astronomy, of planetary orbits with the ecliptic) is recorded from 1660s.

nexus (n.)1660s, "bond, link, interdependence between members of a series or group; means of communication," from Latin nexus "that which ties or binds together," past participle of nectere "to bind," from PIE root *ned- "to bind, tie."

Leonardo made a number of knot images for his own "academy."  Many read "Academia Leonardi" with the word "Vici" at the center which means "won" in Latin and is a pun on his surname "Vinci" which means "win" in Italian, and "worsted" (as in the type of yarn) in Latin.  

https://commons.wikimedia.org/wiki/File:After_Leonardo_da_Vinci,_Sixth_Knot,_c._1490-1500,_NGA_46383.jpg

worsted
noun
firmly twisted yarn or thread spun from combed, stapled wool fibers of the same length, for weaving, knitting, etc.Compare woolen.
wool cloth woven from such yarns, having a hard, smooth surface and no nap.
adjective
consisting or made of worsted.

Many of Leonardo's compositions use the concept and motif of the knot.
Durer made some detailed copies of Leonardo's knots and works as well, one with his own initials at the center

http://dac-collection.wesleyan.edu/Obj5166
https://commons.wikimedia.org/wiki/File:Albrecht_D%C3%BCrer_after_Leonardo_da_Vinci,_Knots_with_oblong_escutcheon_(without_monogram),_woodcut,_after_1507..jpg

Coronavirus is also a kind of a knot in a way too.  Knots are not unrelated to prehistoric stone circles, labyrinths, medicine wheels, mandalas, and the like.  Perhaps questions, decisions, and selections are kind of like knots as well?

All best regards and happy Friday to all!

Max

https://commons.wikimedia.org/wiki/File:After_Leonardo_da_Vinci,_First_Knot,_c._1490-1500,_NGA_46381.jpg
https://www.britishmuseum.org/collection/object/P_1877-0113-365