Tuesday, August 14, 2001
If you've ever given a child a helium balloon, you know you had better tie it to something--or soon you're going to have one balloon-less, heartbroken kid. That crazy balloon will just float away and slowly disappear, and all the while that crying child will be pointing at the sky and expecting you to somehow get up there and retrieve it. Now when you go from a helium balloon to a hot-air balloon--the kind that carry people--you don't want that balloon to just go drifting off somewhere. That's why they put those sandbags on hot air balloons--it called ballast. That extra weight holds a balloon down, it helps control the balloon, and, most important, it keeps it from drifting off. Balloons need ballast. So do people.