It suggests that what most consider true might not be certain, inviting skepticism or further exploration. He chose to question the conventional wisdom that a college degree guarantees success.
Pro Tip 2/3
Cultural Variance
Conventional wisdom can differ widely among cultures; what's accepted in one may not be in another. In her country, the conventional wisdom was to prioritize family over career.
Pro Tip 3/3
Figurative Usage
Often used to challenge or discuss the status quo rather than to uphold actual wisdom. The new study turns the conventional wisdom about high-fat diets on its head.