Doron, your thought experiment is a silly, poorly expressed farce. I can "get" from any point, a, on the real number line to any other point, b, on the real number line in one "step". The size of that step is |a - b|.
Let's use what you have wrote here, not in terms of length, but in terms of values along the real-line.
The definition of size, as used by me here is:
The number of values that are used in a given parallel sum, in order to be, to get, to reach, etc. a given value along the real-line.
So, by using a finite number of values that are used in a given parallel sum, in order to be, to get, to reach, etc. a given value along the real-line, you "get" value b.
Here are examples of infinite sizes:
Here is an example of infinite size |
N| (the |
N| observation of the real-line):
The series (the |
N| parallel sum) value
0.9 + value
0.09 + value
0.009 +... = value
0.999... = value
1
Here is an example of infinite size |
R| (the |
R| observation of the real-line):
The series (the |
N| parallel sum) value
0.9 + value
0.09 + value
0.009 +... = value
0.999... < value
1 by value
0.000...1
By using my definition of size and by using |
R| size as an observation's view of the real-line (where this view is done beyond any one of the values along the real-line), the value
0.000...1 is the complement of value
0.999... to value
1 (where
0.000...1,
0.999... and
1 are values along the real-line).
The value
0.000...1 acts differently than value
0, as follows:
The "
.000..." is used as a |
N| size place value keeper that is inaccessible to "
...1" that is at |
R| size.
--------
|
N| or |
R| are not values along the real-line.
Moreover, since |
R| size is uncountable, it can't be expressed by a string of notations, as used, for example, by the place value method (the best that can be done is, for example, of the form "
...1").