That 5-10% per week is probably only for a very short period. From the article: Important context for this advice, which I believe is often missed, is that the

That 5-10% per week is probably only for a very short period. From the article: Important context for this advice, which I believe is often missed, is that the majority of companies in YC launch during the tail end of the program. So we're talking about companies launching a few weeks before demo day, making a big splash, and getting some nice numbers for demo day. When you've only been launched for four weeks it comparatively easy to get great numbers like this.