One of my least favourite attitudes is that because it’s in the realm of the fantastic, we can do everything and anything. Now, yes: You can pick a direction and do whatever you like at first, but you need to be internally consistent with your creation’s logic.

Narnia feels different than Middle Earth, which again feels different to Earthsea. These works are very popular and have stood the test of time, but also differ in rules and tone, philosophy, as well as who is the intended audience. Th...