My opinion is this post romanticizes the idea of planning before building anything a little too much. As with anything, the devil is in the details. I agree th

My opinion is this post romanticizes the idea of planning before building anything a little too much. As with anything, the devil is in the details. I agree that some type of high-level planning is needed before you do significant coding or design. However, just how much really depends on what you're building. I don't really buy into the notion that writing a lot first will get to the heart of what you want to build. There are far too many unknowns up front. You'll have to start prototyping and experimenting to really know if what you've planned has any merit in terms of a real product. What you've written will give you a map of where you're trying to go, but you'll need to be flexible enough to change some of those initial plans if reality doesn't match your expectations.