Analogies for Sustainable Development/Neural networks as road networks

Babies' brains look like a map of old Paris, with lots of winding, interconnected little streets. But these streets have been paved into wide boulevards in adults: More efficient, but also less flexible.

Quote Bank
Rosenbaum (2014) :

''“If the integrated inputs to a [...] neuron exceed a threshold, the neuron can generate a burst of activity called an action potential. An action potential races down the axon at a speed that is higher if the axon is coated with myelin (a fatty material) than if it is not. ..Myelin takes time to form over the course of development.”''

“The more often two nearby neurons fire in close temporal proximity, the tighter the link between them”