Think about writing the letter ‘e’ on some lined paper for a second…
How do you know where to start the letter so it sits nicely on the line rather than floating in Timbuctoo? Or how to write the letters so they’re a consistent size rather than looking like a haphazard ransom note?
By the time we’re adults, writing has become second nature – we don’t even think about scrawling our signature so it sits on the dotted line (or thereabouts!).