Gah. I posted, and accidently went back instead of pressing "Add Reply."
Somehow.
But yeah.
Anyway, I meant as a field of memory locations/variables which the programmers agree never to turn into a system variable.
'Cause you could use 510, only for it to be one day be the equivilance of .eye1(.refvelup).
Or something.
Oh, and I suppose having .ref vars is useful in the other eyes. But rather then being in the other eyes, I think that they should be rather limited, only showing physical information. However, as a bonus/con, they're very dynamic, allowing the programmers to have a few .eye5 ref variables that aren't stored in memory after what you see vanishes.
And if you need to remember something that you only saw out of the corner of your eye, then it's not hard to make a gene that does that....
Though that's just my oppinion. Especially the dynamic part.
But the whole physical information-only part makes sense in my oppinion, if only because it's similar to how humans (and other animals?) see.
Sure, you can see that there's an object out of the corner of your eye, and sure you can tell the shape. But unless you look at it, or are really good at looking out the corner of your eye, you won't be able to examine it very well.