Just look at that. This truck is taller than a used kid (10 years old). I assume the truck can run over pretty much any other age but probably the driver might be able to see older kid’s heads. Or we could teach our kids to jump to school rather than walk. If you see a truck, jump and make eye contact before jumping while crossing the street. Or we could tell our kids to never go outside until they are 21.
I think OP is probably a non-native english speaker and meant something like: “the child used in the example above (10 years old)”
What? 10 years old? you think that’s a new kid? Nah that kid is almost a new teenager.