Ever notice how emotions, especially negative ones, can start out like a small drip and then grow into a trickle when it comes into touch with another. The emotion passes to the next person and then grows bigger. The two emotions roll together, widening the emotional stream and flows on to more people. Each contact, each transference of the emotions, makes the bad feeling keep flowing. If no one builds a dam to stop it, the bade emotion can take over everyone in its path. Like with a flash flood, with bad emotions people can get wet, only with the emotional river the water comes from tears shed from hurt feelings. The things washed away by the emotional flood can be rebuilt if the foundation was strong.