The car-analogy is a good sign that the speaker is not able to express the thought directly. The networks are not that simple, and the analogy breaks down at depth for every comparison. Like the modern drivers who consciously chose not wear a seat belt. Or that half of the 1.25 millions of death a year are the &quot;vulnerable users&quot;, called so by the who: <a href="http:&#x2F;&#x2F;www.who.int&#x2F;mediacentre&#x2F;factsheets&#x2F;fs358&#x2F;en&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.who.int&#x2F;mediacentre&#x2F;factsheets&#x2F;fs358&#x2F;en&#x2F;</a> , and fatalities of laws of momentum, where a 150 lbs pedestrian absorbs more energy than a 3000 lbs Scion...<p>Stop talking cars and and analogies!
Talk straight!