However, this had not stopped the construction frenzy in Buna. On the contrary, it had liberated them from any pretense that they were sheltering themselves from gas. With thousands of people continuing to pour in, with guaranteed free food, free shelter, and all the network data they could eat, the city was tautly inflated with boom-town atmosphere. One group of zealots was constructing a giant plastic structure roughly the size and shape of the Eiffel Tower, which they had dubbed the "Beacon of Cosmic Truth." Other hobbyists had taken smart geodesics and airtight skins to a logical extreme, and were building aerostats. These were giant self-expanding airtight bubbles, and if they could get the piezoelectric musculature within the tubing to work properly, the things would engorge themselves to the point where they could literally leave the surface of the earth.