Until you start to write seriously 
I can differentiate between left and right but I know many people who can’t (otherwise clever people btw).
I came to believe that it is not connected with intelligence.
It seems we need a “tag” from some kind of authority we trust (family, teacher, Harvard professor etc.), in order to be able to recall things.
(My theory is that we can’t memorize or forget things, just experience and recall it or not recall it)
I can’t remember where is east and west but I CAN absolutely safely in ANY situation of my life, tired hungry desperate, like really in any situation tell you left and right.
East and west needs a crotch, always.
So I analyzed what happened as a child when I heard about east and west for the FIRST time.
That was after I came back to elementary school being sick for one day.
My friend (bad student, not really trustworthy when it comes to explanations about things we learned in school) said that I missed out on the North- East- South- West thing.
And he said to me, that now I will not be able to pass the test.
I was really desperate and told that to my parents and they told me that mnemonic I use since then. I just can’t recall east and west without that!
But I can recall left and right!
But it is basically the same thing. So I remembered the first time I heard about left and right.
That was from my funny grandfather.
I trusted him completely but he is a bit of a joker.
So he looked at me really seriously and said to me in a rhyme (works only in German):
Remember that girl: Left is, where the thumb right is!
And I was really impressed by that wisdom (he just wanted to fool me but I did not realize that) and from that point I remembered left and right. IF I would need to make sure that my concept is correct actually I would recall that rhyme from my grandfather first, then move my left arm and would know where left is. But there is NO whatsoever logical connection to that rhyme to my left hand.
So my theory now is, that we don’t need a logic to “tag” information about the physical world to concepts that exists in the mind. Maybe there is no logic between that two realms necessary. It works like magic.
It is more like whatever short (the more rhyme the better) is presented to you by someone you trust is working as that tag.
If we learn through WK that means nothing else than, we trust Koichi.
But as soon as we start to trust ourselves, we can make our own mnemonics for the same purpose.
For me I realized I don’t need logic, the more bizarre the better. In that sense for me it is exactly the same like for you. Ah, a rice field and a street, that’s what it takes to make a town, all right no problem, but that only works for me because it seems that I trust in Koichi to have an authority when it comes to learning Kanji.
Sorry for the long reply and thank you for your detailed description, it really helps to compare ways of recalling!
