Your comment is not a substantive addition to the discussion. It's generally understood that anyone on HN who doesn't take the time to click into this thread is

Your comment is not a substantive addition to the discussion. It's generally understood that anyone on HN who doesn't take the time to click into this thread is likely to be either not in the target market or is otherwise unwilling to pay for an ebook on this topic. Chiming in on discussions anywhere simply to say "I'm not the target audience and here are some reasons that no one should be", is generally met with some social equivalent of downvotes. When someone makes a thread along the lines of "Non-NodeJS devs, what keeps you from using NodeJS?", this comment will be a welcome addition. I'd suggest that even there, you add something substantive. That the language is dynamic is probably not a good starting place given that dynamic languages run like half of the internet. Start with threading, the event loop, callbacks or swallowed errors - all ripe targets.