On the Unknotting of Shoes, pt 1

Problem Statement: on the pair of shoes I conventionally wear for day-to-day activities, my right shoe has a tendancy to become unknotted frequently, while the left shoe has not, in my memory, ever became unknotted. Both shoes are tied with the same knot.

Hypothesis: the lace on my right shoe is responsible for this unknotting.

Experiment: swap the laces between my right and left shoes.