My my, teaching is hard work. But it can be fun. And one of the things that you learn early on is that there are many different kinds of intelligence. Knowing how to use a colon doesn't necessarily rank high up the list, though it's a handy skill from time to time.
This year I have a class of adults who, for one reason or other, slid through school managing not to attend very much. The other day I asked them to do a bit of writing. They were mainly rather anxious about this but gamely settled down to it. Some of them decided to use one of the college laptops, others pens. The laptops aren't in their first flush of youth and can be a bit slow to load up.
One of the students sighed in frustration: "This computer's taking ages to get going."
A large, tattooed young man with his legs crammed under an adjacent desk gazed sorrowfully at the few words he'd so far written on a piece of paper. "This pen," he muttered, "isn't awful fast either."