system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are you not allowed to use a mechanical pencil on standardized tests even if it's the same #2 lead?
gpt
Mechanical pencils can be taken apart/could possibly put small pieces of paper with cheat notes inside. #2 wooden pencils are solid and uniform across companies so are easily identifiable to administrators. Regardless of the usefulness of the tests, there was a lot of thought put into ensuring all students have an identical experience when taking those standardized tests.