Couple of points about Sibrels intro video: 1. Back in the early 50's the efficiency of the rocket engines was no where near the awesome F1s used more than a decade later. Lower efficiency/thrust means enormous extra fuel payload. 2. The staging process is there to reduce weight overhead to increase efficiency. Taking a whole empty rocket to the moon would be a huge waste of energy and again increase the fuel payload. 3. Originally the direct ascent launch mode was considered the only feasible method, and would require *several* Saturns to build a lunar vehicle to get to the moon and back, so at least they should have acknowledged that. (Thats why the VAB is as big as it is, they were gearing up for several launches a month - imagine the cost projected before lunar orbit rendevous was agreed!!)

Overall, IMHO, the comparison is useless, and the claimed 280x inacuracies are groundless and demostrate plainly the HB unscientific approach.

+Tim+
PS: Got to see this outrageous lie, via the google ads from this sight - so its not just moonpans affected (or is that infected?)