Why is it called an Icord?
The venerable Elizabeth Zimmermann rediscovered and named the I-cord (the I-cord, called a “stay lace,” was mentioned in Victorian needlework manuals). The “I” stands for “idiot” because Ms. Zimmermann thought the technique was so simple anyone could do it (even an idiot, I guess!).
Who invented Icord?
The I-cord is a tube knitted in the round with two double-pointed needles. Elizabeth Zimmermann named it the Idiot Cord in honor of her accidental discovery of the simple technique.