Seeing outside consciousness would lead to have no perception about anything in this world. Besides this, the argument that author provides is perfectly ok, but in my opinion you misunderstood it. What matters here is not the division of space only, but the division of time too. You can repeatedly divide a distance as much as you wish, but time is not slowing down in any way - that's what the author says, so in fact there is no paradox here whatsoever.