Hi--

>> Hmmm, though I grew up with monocular vision, switching from the right
>> eye for distance to the left for close viewing, the above demonstration
>> does not work for me - I see two fingers at all times when looking at a
>
>> distant subject, so lining "it" up with the distant subject is
>impossible!

>How do you point at things? I see two fingers too, when I think about it,
>but the one seen by my left eye is invariably the one aligned with the
>target object. My brain tends to ignore the other image as it is always
>subordinate to the one above. Maybe you're trying too hard?
> "Leon Vick"

I guess I don't point at things....! ;-) I always see two fingers.
Though the left is often more solid.... - but it does not wind up
necessarily pointed at the subject. (It may have to do with early-on
learning to be able to concentrate on more than one point in the field
of view at a time [or a part, or all of the field of view at once]).
I just assumed that anyone with binocular vision would see the two
fingers (it kinda defines binocular vision, I would think.....;-).