Interesting that the OP's question related to remembering "flying knowledge".
There is a hierarchy of stuff we "know", like this:
Data > Information > Knowledge > Wisdom
We frequently need access to all four kinds. And we are all trying to build our knowledge and wisdom by distilling data and information into useful stuff to know. That process of distillation is what the earlier posters mean by experience and being air-minded.
Which means that it isn't knowledge if you have to try to remember it
