When Bixby says that Twain needs to learn the shape of the river, he means that Twain needs to understand the nuances and characteristics of the river, such as its twists, turns, and currents, in order to navigate it effectively. This advice reflects the importance of experience and familiarity when dealing with challenging situations.
So you can learn. Your brain needs to be in top shape.
It needs to be in good shape.
No, a rivers shape is always changing.
A v
rain
Mississippi river
It needs to be in good shape.
River valleys, U, Glacier Valleys, V.
You can learn the size of the insects prey.
round
Bendology
a meander