[JesseK]

There's a pretty easy solution if it's important enough for them to stop: deny access to the upper tiers. Yet there were paper airplanes last year and it wasn't enough of a problem for them to deny it this year. Next year a small acknowledgement and request will probably suffice. "haha, thanks for remaining true to engineering -- yet let's have an applause and some respect for our incoming speakers and sponsors".

Mad props to whoever made the airplane that soared and hit the screen on the Galileo field.

Just wait, next year's safety award campaigns will include "proper" and "safe" paper airplane construction that "minimizes risk of poking an eye out".