If you mean that I must a letter or number bring closer to the object(sign), I think that it does not matter..
I created a one new test.
On the left side is a primary single digit number, on the right is a primary two-digit number.
In first picture when I far away I see single and two-digit number.
The second picture (below) is from closer distance, I don't see a two-digit, only I see a single digit number.
And also you can see there is very distant (space) between numbers and sign, and it is same.
According to your theory, the single number should be disappear, but is not, it is here too.
I try to tell you that single digit number always stays the same, and how he is good and others not?
Maybe now you find mistake


Dany







