my physics A level teacher did something really interesting with us. we spent a whole class looking at an old O Level question from an exam. all of us, includ

my physics A level teacher did something really interesting with us. we spent a whole class looking at an old O Level question from an exam. all of us, including the boffins in the class, were completely stumped by it. he explained it to us at the end, but it did solidify an appreciation in me that, at least 20ish years ago, we definitely had it easier than folks before us.