Example of how my brain is working right now:
One of the milestones for baby development for a couple of months ago is the ability to track an object as small as a raisin across the baby’s field of vision.
How do you know the baby is tracking the raisin? If you’re holding it, the baby could just be tracking your hand, which is (probably) much larger than the raisin.
Maybe if you hung the raisin on some string and dangled it in front of the baby…
[Picturing using a needle and thread and piercing the raisin so you can dangle it] Who would go to that trouble?
Why not just use a necklace with some kind of pendant?
Oh. Maybe that’s what they mean, but they can’t say use a pendant because they come in all sizes and they’re using raisin as a point of comparison. Duh.
No, because how hard would it be to say “baby should be able to track an object, like a pendant on a chain, as small as a raisin”?
Be clearer, baby books!
Do I have any intention of dangling a pendant (or a raisin) in front of Jack? No. Does that matter to my brain? No. Is this really any different from how my brain worked pre-Jack? No.