- relevant to learning
- redlining in a controlled env can be useful for like measuring progress or something, but that shouldn't be the norm
- by maintaining excap one can ensure there's room to move -- buffer. that's important while learning b/c you're focusing on creating new organization of knowledge and reorganizing existing knowledge. trying to learn without excap is like trying to do tetris with no v-space. with lots of v-space tetris is manageable, but it gets hyperbolically harder as you approach the top.
re long-running learning conflict: the more exploratory side means exhausting excap quickly (manageable when surveying, but not when trying to complete a project).