The most difficult challenge is what the author describes as: "When you find your product getting too monolithic, break it up". It's easy to pile on features when you develop a product, but doubly difficult to derive it down to the most essential. The author's example of the iPhone as a "microlithic" idea also seems skewed - I'd say that the iPhone was rather a simplified platform that made consuming microlithic products (apps) more easy and enjoyable. This blog post was an interesting re-hash of more common ideas. 3/5