The following picture describes a simple feature collection of the package sf in R. However, I don't get the meaning of sfc. A feature collections consists of a set of simple features, three in the picture.
Each simple feature has a geometry, sfg, granted, but what is the role of sfc?
Why does is span multiple features?
In my understanding, a simple feature should consists of exactly one sfc, and each sfc of a set of geometries (sfg).
Can someone help me to understand the relationship between a simple feature (one row) and the geometry list-column (sfc)?