“Founders often try to signal they’ve reached product/market by pointing to their number of employees or a major round of funding. What I look for is a frantic founding team trying to deal with ever-growing numbers of happy, loyal, and ideally paying customers. Until then, stay lean, keep burn low, and resemble a Navy SEAL team instead of an Army battalion.”

“there are three key lessons we can learn. One, you need all four Fits to grow to $100M+. Two, you can't think about the four Fits in isolation because together they form an ecosystem for growth. Three, you need to constantly revisit the fits because they are continuously changing.”