With great hesitation - I'll offer what I've come up with so far. Please keep in mind that for DS7 - the biggest struggle is still social interaction. He hasn't hit that "increased demand" point that others have described at third grade, or middle school, etc.

Here it is:

Imagine you are designing the Google self-driving car. You begin with 5 basic sets of sensors, and processors to handle the data from each. The result - a car that drives itself without crashing into things. Your car works great on a test track with two obstacles and a top speed of 10 miles per hour.

But it crashes when more obstacles are added or speed is increased. So you upgrade all your sensors. Then to be safe, you upgrade them a couple more times. So now your car is taking in 1,000 times more data - all the data it needs to go fast while avoiding many obstacles.

Unfortunately, you forget to upgrade your processors, too.

Imagine what will happen to your ride when that 1,000 times more data hits those non-upgraded processors. Best case scenario is all stop. Worst case - better call 911.

Please poke holes, comment, etc. I don't want to look like an idiot if I try to make this analogy.