The usual picture of knowledge is a tree. One trunk, a few big branches, everything ranked and traceable back to a single root. To learn it you climb; to belong you find your place on the chart. Miss a branch and you're lost.
Deleuze and Guattari offered another shape: the rhizome. Picture ginger root, or crabgrass, or fungal thread — no trunk, no first cause, no top. Any point can connect to any other. It is "a model perpetually in construction or collapsing," they wrote: a map you can enter from any edge, not a tree you must climb from the base.
Cut a rhizome and it doesn't die — it regrows from anywhere. There is no root to ask permission of, because there is no root.