Plans Are Like Koalas

Plans are like Koalas.
Koalas start off young, untouched by the external wound; sheltered within a pouch.
The time in the pouch will come to an end and the koala taken from shelter is forced to adapt. The koala is born on an instinct to move forward and consume. But the koala consumes only poison and eventually they die and more koalas take their place; all striving and dying for the poison they consume. 
On and on until the dingoes learn to climb their trees.