I have sailed for decades and could usually manage a Bolen knot by counting through the required actions. Then, in a yachting class I had it demonstrated and described as a 'gripping knot'. That's all I've needed ever since to tie this knot in a crisis, underwater, upside down or anywhere else - i.e. I needed to know why not just how. The why is the the learning objective.
Other's are coming to me - like the definition of an isthmus and a peninsula because they were beautifully drawn and coloured in - and was followed by a sharp clip around the ear. I was 6 and my older brother had come into the class and I wanted to give him a kiss.