Anyone who believes a startup goes up and to the right has never been inside one. The real shape is jagged: long flat stretches, sharp drops, recoveries that depend less on the plan than on the people. Building is, structurally, an exercise in meeting adversity and continuing anyway.
That reframes what is worth underwriting. Traditional founder signals — the brand of the school, the name of the last employer, the warmth of the introduction — are heavily observed and weakly related to who endures. The capacity to adapt is harder to see, and may be more predictive precisely where companies are most fragile.
Adversity builds a reserve
Difficulty, when it forces adaptation, leaves something behind: a reserve of judgement and composure a founder can draw on when conditions worsen. It is the nearest thing to a balance that funds the hardest stretch of the journey — not money, but the learned ability to keep moving without certainty.
Constraint changes what you see
Founders who built under scarcity often read customers, urgency, and trust differently. They have already practised the disciplines that comfort never demands, and those disciplines compound when capital is short and the path is unclear. The best companies tend to be built by people who are not only ambitious, but adaptive.