the long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.

Tunnel vision is the loss of peripheral vision with retention of central vision, resulting in a constricted circular tunnel-like field of vision.

Emerge from the darkness, blacker than darkness. Purify that which is impure" is an incantation used by jujutsu sorcerers to create a curtain. When activated, the curtain:

Transparency

State of mind

The provided text defines complexity as the state of being intricate or complicated. It illustrates this definition with an example, highlighting that complexity can be a characteristic of significant issues. The excerpt focuses solely on this single meaning of the word. Essentially, it offers a concise explanation of what "complexity" means. No further information or examples are given

a person or thing that is mysterious, puzzling, or difficult to understand.

"Madeleine was still an enigma to him"

Knowledge of self