The latter. Maybe I should reread the post, but it invites you to visualize a cell as Times Square -- scaling the sizes -- and then the unscaled speeds give the

The latter. Maybe I should reread the post, but it invites you to visualize a cell as Times Square -- scaling the sizes -- and then the unscaled speeds give the wrong impression within that visualization. (Mechanical properties like stiffness don't vary when you scale space and time together.) Outside of it, of course the absolute speeds are what you want to know.