Knowing your inclination — right brain or left brain — is helpful for writers. I have always argued that writing necessarily involves both halves. We need the creative and artistic right brain and logical, precise left brain to do almost any kind of writing well.
I’m pretty sure this is meant to be a spoof. Assuming it is, it’s funny.
I used to ask this question at some point in every English class I taught: “How many sentences in a paragraph?”