Talk:The Staircase Implementation/@comment-91.153.28.59-20120802152821

"One of Leonard's whiteboards contains an analysis of hydrazine propulsion systems... Referenced thrust values, including those for the Space Shuttle Main Engine (SSME) and Saturn-V"

In fact that "C-Stoff, B-Stoff"-rocket fuel whiteboard is allready in the apartement at Leonard's first visit.

So it seems like set decoration-goof.