A simple formula for startup priorities: Breadth * Depth / Cost

The article proposes a simple formula for startup product priorities: (breadth × depth) / cost, where breadth is how many users a feature affects, depth is how important it is to the average user, and cost is the effort to build it. The author says applying it usually points to building features that affect many users profoundly and can be built quickly and cheaply. Early on, the article argues, depth should take priority to reach product/market fit, such as finding 100 users who really love the product, before focusing on breadth. The author notes the formula cannot replace good judgment and that founders should make their best guesses and talk to customers.