I think often of what it would be like to share marbles with Arthur, to pass them from hand to hand. Cool glass warmed by one palm, then warmed again by another. Muted clicks and chirps and color rolling over color. Light bouncing off a sphered surface.

When I imagine him examining a marble he is holding it close to his eyes - much too close for him to be able to see anything but a rounded smear. This is probably the fault of a nearsighted brain refusing to maintain the reality that a man with perfect vision could not see something held close to his face, but I like the inquisitiveness of it - his hunched back and his open eyes and the slow turn of the marble between his fingers.

But if Arthur has two pairs of eyes, then the reality could be that he is able to focus on objects both near and distant. Maybe he has the gift of detailed vision without the loss of vision more broadly; and maybe he has never needed to use a magnifying glass and doesn't fully understand its purpose.