In psychology, resilience is defined as adapting well to difficult experiences through mental, emotional, and behavioural flexibility — not toughness in the abstract. Entrepreneurship research increasingly treats it the same way: not a fixed trait, but a developable capacity that emerges from experience, judgement, and support.
We try to be precise, and we try not to overclaim. The evidence does not say more hardship is better. One strand finds an inverted-U: moderate adversity can build resilience, while extreme adversity can damage outcomes. So our claim is a narrow one — that in the earliest, most fragile stage of building, the ability to absorb stress, improvise with limited resources, and keep a team moving is economically useful.