“Having a tight feedback loop while building your product is key to iterating and moving quickly. For most startups, including Path, one of the most efficient and practical ways to get feedback is by testing rapidly amongst close friends, family and employees.

We treat user testing as one of many signals for making decisions. When building, it’s important to remember what specific problem you’re setting out to solve. Trust your intuition: early on, it’s especially important when larger decisions are so fragile and easily swayed. Remember that you can’t build something that pleases everyone: trying to do so normally results in a weaker, confusing release. Stay focused on the use-case you want to nail and be merciless on getting it right. The smallest details can be the difference between a product that delights and one that confuses.”