The Wright brothers&#x27; achievement is a poor analogy. At the time, other inventors had been gradually inching toward powered, controlled flight for decades. All the serious players in the field knew that it was possible in principle and there were numerous predictions that someone would do it soon. The Wright brothers success was due to several incremental improvements in engine power and aerodynamics achieved through rigorous research and diligent engineering over years. They didn&#x27;t have a single, brilliant insight.<p>With general unsupervised learning we can&#x27;t even clearly describe the goal we&#x27;re trying to reach or define it in objective terms.