[quanticle]

    This author’s specific goal is 500 words a day. There is nothing vague about
    that!

It's extremely vague. It's like saying, "I wish to turn a screwdriver five hundred times today." It's reasonable to ask, "For what purpose are you turning the screwdriver?"

    For example, in my own journaling today, I’ve written 646 words. So clearly
    the goal is not “impossible to achieve”, as you’ve claimed.

And what terminal goal are you trying to achieve with this journal? And why is necessary for you to write > 500 per day to achieve that goal?

[schaefer]

  >It's extremely vague. It's like saying, "I wish to turn a screwdriver five hundred times today." It's reasonable to ask, "For what purpose are you turning the screwdriver?" ... what terminal goal are you trying to achieve with this journal? And why is necessary for you to write > 500 per day to achieve that goal?

On the chance that you are asking these questions in good faith, I can point you to a very deep and well written counter argument to your stance. Among his 20 or so other books, The prolific Japanese Author Haruki Murakami has written a book: Novelist as a Vocation. I encourage you to read it in whole, as my attempts to summarize will only take it out of context and butcher it. However, I will say that Haruki lays out the personal opinion that for him consistency is the bedrock of his writing practice. That above all, he sees writing as a daily commitment. He strives for 2,000 words a day. He typically takes on one wholly creative work at a time, such as the next novel. On days he just doesn't feel passionate about that project, he will translate works from English to Japanese until the passion for the project naturally returns. He makes the argument that the days he spends translating give him time to think and digest the next steps in his novel while also allowing him to keep a whole collection of "writer's habits".

---

You can argue that his methods don't seem right for you... but you can hardly argue that his methods aren't right for him (and perhaps others).

[stackbutterflow]

It's in the article. Literally under the "Why" paragraph.

[quanticle]

I presume this is the passage you're referring to:

    The problem is that I’m not getting much better at unprompted creative
    work. Observing problems and solving them, coming up with ideas and
    executing… those opportunities come few and far between in the university
    classroom. 

The problem is that writing is a total non sequitir of a answer to, "How can I get better at unprompted creative work?" There are lots of other things, from painting to programming to just going on walks that could make one better at unprompted creative work. So my question stands. Why writing? And why writing 500 words, specifically?

[stackbutterflow]

Literally two lines below

> But I’ve decided it’s time to take my creative development into my own hands and I’m starting with writing.

He's starting with writing. He didn't say that writing is the only way to be more creative. Just that the author has decided to start with writing. Because you gotta start somewhere and he already has a blog.