Random Analogies
"But then the fella went on. Diet Coke drinkers are more hardcore. Sure they may not drink Diet Coke all the time, sometimes they have water. But as a group, 100% of them are regular drinkers. Be warned, watch out! When the craving hits, nothing else can satisfy the hunger! First, your tongue goes dry. Then the whole esophagus is like the Atacama Desert (for those of you who don't want to Wiki that, its the driest desert in the world)."
"Picture a switchboard operator of old. There she sits, in front of a dizzying array of toggles and lights, ready to push buttons and stretch cords to connect incoming calls to just the right recipient. She might even listen in on the conversations from time to time. The protein Ras is like that operator."
See the link for a good picture and longer discussion.
