This raises the question of what to do with that valuable knowledge.

With a reduced headcount, not only have you lost valuable knowledge, but members will be working outside of their comfort zones without a clear understanding of their roles and responsibilities.

Lurkers can also develop stores of valuable knowledge as they lurk which may be helpful later should they decide to contribute.

In working for them riders acquire valuable knowledge and skills, which enhance their riding experience.

Observations such as shape, thickness, or that alluvial fans are even present gives geologists valuable knowledge to understanding the region that they are studying.