Our brain is a parallel processor, where parallel processing means
that you can do more than one task at once. Some of the new computers,
you can be receiving email in the background, while you are printing,
while you are doing ten different things at once. If the computer is
strong enough you can do all these things, and not even notice the other
things are going on because the machine does them simultaneously and
in the background. To understand the level of how massive the brain's
parallel processing capacity is, consider this.
If you take one eye you have million of axons in it. Each of those
axons feed into the brain simultaneously. The eye doesn't put it all
together and send it to the brain. And of course there are two eyes,
so that is millions and millions of simultaneous images driving into
the brain. For the brain to figure out whatever it is figuring out visually,
it has to be processing a million parallel processing events in each
eye simultaneously. And that is just to see, the most basic and taken
for granted of our brain functions.
Think of the way we learn about the city. Hopefully you can remember
a time when you walked into a new city for the first time. The first
way many people learn about a city when they visit it is by reading
a guidebook. Perhaps you did something like that when you first came
to ODU's campus. Now compare how much you actually know about your city,
or ODU, which what you learned that first time when you read the book.
How much did you learn from that process? Not very much. Your experience
of a city is completely different than the abstraction you get reading
somebody's description of it. Contrast that with the way classrooms
are organized. Classrooms are organized to present things one at a time.
We know that the brain can process millions of things simultaneously.
We know that when it does, like the first time you walk into a city,
then you learn on much deeper and richer levels. So where do we get
this notation that we are better off trying to present just one thing?
This is probably one of the most destructive misconceptions of how we
learn.