What part of "ignoring the off by one error" in the parent don't you get ? Edit: Sorry, unnecessarily snarky, and I could have made my (now uneditable) post cle

What part of "ignoring the off by one error" in the parent don't you get ? Edit: Sorry, unnecessarily snarky, and I could have made my (now uneditable) post clearer by saying ">=250" rather than ">250".