>Horizontal navigation is much easier than vertical navigation (gravity and all that). Vertical navigation should be easier, at least for going down. All you

>Horizontal navigation is much easier than vertical navigation (gravity and all that). Vertical navigation should be easier, at least for going down. All you have to do is jump... If they could just come up with a safe and reliable way of getting people from the top of a tall building to the bottom quickly, taller buildings would be easier. Perhaps a spiral slide? Faster elevators would be nice too. If they allowed up to, say, 3gs of acceleration, we could move between floors of tall buildings much more quickly. "Going up. Brace yourself!"