Jj is for Jottings 4. Learning, Part 2.

During the processes of thinking, remembering and being physically active, new dendrites grow. (See Learning, Part 1.) They act as contact points and open new channels of communication with other neurons as learning occurs. Dendrites create increasingly complex interconnecting networks of neural pathways, through which reactions and thoughts travel in the form of electrochemical impulses. As long as stimulation continues, more dendrite branching occurs. If stimulation stops, the branching stops.
Unlike a computer, the great intermediate net is a true free-form information network, in which all information with the brain is available at any time from any point, and is therefore much more flexible than even the most advanced computer.
Most neural pathways develop through stimulation and experience gained from interaction with the environment. So whenever we do something new or different the brain remodels itself. I have actually seen this in action on a number of occasions when I have noticed that some young children of about 4-6 years of age have taken a noticeable leap forward in their development even over a two-week term break. I usually discover that they have been away on a family holiday.