The real reason for not using numerals is that in most typesets, and even how we learn to write them, they look like capital letters. This causes the reader to draw unnecessary attention to the numbers themselves in the same way which ALL CAPS might. "The five of us went skiing," vs. "the 5 of us went skiing" -- the number of skiers isn't interesting, the activity is the important part of that sentence and the number is secondary information.
The author of the article is right that writing is both a skill and an art form. The skilled writer can alter the way a sentence is understood by their choice of punctuation, but abandoning the rules should only be done when the author understands the consequences of breaking those rules; using explicit choices to guide the user to deeper understanding of the intended meaning.
"The policy is predicted to have payoffs in 8 to 12 years," "the policy is predicted to have payoffs in eight to 12 years," or "the policy is predicted to have payoffs in eight to twelve years." If I were writing that sentence, I would probably go with the first style as I believe it is the best for conveying what is important to the reader. All three say the same thing, but mixing the spelt and numeral forms is the most distracting and least legible.
The author of the article is right that writing is both a skill and an art form. The skilled writer can alter the way a sentence is understood by their choice of punctuation, but abandoning the rules should only be done when the author understands the consequences of breaking those rules; using explicit choices to guide the user to deeper understanding of the intended meaning.
"The policy is predicted to have payoffs in 8 to 12 years," "the policy is predicted to have payoffs in eight to 12 years," or "the policy is predicted to have payoffs in eight to twelve years." If I were writing that sentence, I would probably go with the first style as I believe it is the best for conveying what is important to the reader. All three say the same thing, but mixing the spelt and numeral forms is the most distracting and least legible.