book on buddhism and zen resting next to mrs. potato head. here's what i want to know-- this is a swiffer. >> clark: it is a swiffer. >> rose: it's sitting next to the encyclopedia of world history. >> clark: of course. >> rose: that doesn't make any sense to me. does it make sense to you? >> clark: it... it does. >> rose: what?! >> clark: can those two things... you look at how these items fit in the bin. >> rose: yeah. oh! >> clark: they're optimized for utilizing the available space. >> rose: oh, i see. >> clark: and we have computers and algorithmic work that tells people the areas of the building that have the most space to put product in that's coming in at that time. >> rose: amazon has become so efficient with its stacking, it can now store twice as many goods in its centers as it did five years ago. >> clark: anything you want on... on earth, you're going to get from us. >> rose: anything you want on earth, you're going to get from us? >> clark: yeah, that's where we're...