Thor, in the process of working on Aerotrack, became intrigued with the basic theme of pneumatically driven ping-pong balls, and has embarked in a whole new direction. I won't spoil the anticipation by disclosing too much, but this exhibit involves using pressurized air to set balls dancing to adjustable rhythms. As you can see from the picture, it's grown into an octopus of tubing and dancing balls, which combo I've jokingly dubbed "ping-pong polka." A simpler version of this exhibit should be available for your delectation within the next few months as an experiment that will be added to and modified from time to time, according to our observations of its public interaction. Stay tuned for further news on this one.
We've had problems with the bicycle pumps that drive the air engine exhibit failing frequently, due to enthusiastic attention, mostly from young visitors. In fact we've gone through any number of these pumps, which cost over $100 each, so we're anxious to address this vulnerability. Bill Lee, our exhibit manager, has done extensive research on beefing them up, and may have a satisfactory solution in place soon. We have a couple other creative ideas for additions to the air engine. These will find their way onto the stage as we find time to implement them. As is always true with the creative work of exhibit building, ideas have a way of mutating as development proceeds, so that the idea we start with often ends up manifesting entirely differently than anticipated. Hence my reluctance to inhibit exhibit builders by being too specific about their work in early stages of conception. It's much more interesting to leave the development process open ended until it settles on its own direction.