Inferences made from the mapping

I-J defines the person.

There are four quadrants, the feet being in the upper two quadrants.

We tend to think of ourselves mainly as upper body with our feet at the boundary of the external world. So, when we measure the external world it's through our legs and our toes. This could be an ancient artifact of our tree-dwelling days.

The head, arms and fingers are in the lower two quadrants.

I'm not sure whether left-right orientation is significant or not, but I have the quadrants left of the vertical divider as under temporal authority.
The quadrants on the right side are under divine authority. Although divinity has lip service as all-powerful, acts of God tend to embody uncertainty, fear, and disgust, in terms of the effects of natural disasters, plagues, and war. So, these right side quadrants cover issues of Love and Hate.

The logic of the letter distribution is as follows:
Vowels are central to the first primitive count: A-IJ-E is one, two, and O-U is Many.
The second level of counting puts vowel A in the index-thumb circle for a unit, the three remaining fingers count three units for a total base four. Some have suggested that the spaces between the fingers rather than the fingers themselves are counted.
The third level of counting extends the arm letter onto the thumb, and the remaining four fingers count base five.
This can generate base ten, and base twenty, counting digits alone.
A fourth level of counting distinguishes arms and legs to generate base 12 in the lower half and in the upper half.

This is a speculative mapping since the Roman alphabet was slightly different. Nevertheless, there are strong historical forces influencing what letters are near to the beginning of the alphabet, and what letters are further down the line, what letters are found in declarative, authoritative words, and what letters are found in expressions of love, hate, and disgust.

Note the left hand-arm, K-A-B-C-D with primitive consonant-vowel pairings Ka, Ba, Da.
Both Ka and Ba figure in ancient Egyptian temporal power, and in current Islamic temporal power.
Note the right hand-arm L-E-F-G-H with primitive consonant-vowel pairings El which has been used to identify God. Helping, Giving , Fending are words aiding a sense of community and all the words draw heavily on letters from the right side.

The upper half vowels work with the leg consonants to form Om - Un. Phonetically this is close to Amun the name of the Egyptian ancient chief deity, whose bark led all the major ancient processions in religious observances by the pharaohs.

It also is close to the word, omen, which signifies the reason for the horizontal boundary, and is also close to the prayer ending word, Amen.

The big inference here is that our alphabet spells out that we 'walk' with God as we interact with our external environment.

The upper left quadrant also has all the letters of the ancient authoritative Roman republic, SPQR pointing to the authoritative ordering of the external world. M O-PQRST

The upper right quadrant NU-VWXYZ generally supplies letters to neutral, declamatory or negative words. The right side quadrants are faithfully affirmative or negative, whereas the left side quadrants are authoritative-compliant to authority type letters.

What strikes me as an inference from this mapping of letters is that the Semitic religions populate the lower half, and sit upon the OM-UN or Amun of ancient Eqypt. This is striking since we are mapping the English alphabet which didn't exist two thousand years ago!

Yet, this alone does not weaken the inferences from the mapping process. English is a mongrel language which filters out the chaff, letting through the strongest vowels, consonants, and the strongest Consonant-vowel combinations, preserving the strongest meanings.