Well then, it's possible that your distribution of knowledge is atypical.
Besides, most people have forgotten most of what they knew in fourth-grade science, unfortunately. I recently gave a talk about planetary science to a classroom full of seven-year-olds, and was astonished how many random facts some of them seemed to know.
Kid: "How many moons does Jupiter have?"
Me: "Well, there's four large ones, and quite a number of smaller ones. We're still discovering new ones, and the smallest ones are only a kilometer or so in diamet..."
Kid: "Sixty-three!"
I checked when I got home, and damn, he was right, there are currently 63 known moons of Jupiter. I research Jupiter for a living and I didn't know that, but this seven-year-old kid did.
Besides, most people have forgotten most of what they knew in fourth-grade science, unfortunately. I recently gave a talk about planetary science to a classroom full of seven-year-olds, and was astonished how many random facts some of them seemed to know.
Kid: "How many moons does Jupiter have?"
Me: "Well, there's four large ones, and quite a number of smaller ones. We're still discovering new ones, and the smallest ones are only a kilometer or so in diamet..."
Kid: "Sixty-three!"
I checked when I got home, and damn, he was right, there are currently 63 known moons of Jupiter. I research Jupiter for a living and I didn't know that, but this seven-year-old kid did.