Bolisani, E. & Bratianu, C. The Elusive Definition of Knowledge Knowledge Management and Organizational Learning, 2018, 1-22, explores various definitions of knowledge.
If knowledge is acquired after solving a problem, then finding good problems may be an important prerequisite.
In that regard there are also these somewhat related articles:
Preprint Asset management of problem solving resources
Preprint Problem seeking -- Distinguishing AI and Human Intelligence
What are your views? Are there examples illustrating your views?