Soil is a highly attenuating material, meaning that it is difficult for sound waves to travel far in it.

ECONOMIST: Archaeology

But their screen resolution is less than the Mac's, meaning less material can be seen without scrolling.

WSJ: Ultrabooks Bring Light and Speedy to Windows

You can also use the same app to prepare tracks for more advanced DJ techniques, meaning -- as the marketing material will have you believe -- you can sketch out a set while skateboarding through your hood, before rolling up and rocking the party.

ENGADGET: Pioneer XDJ-Aero review: a DJ controller that loves music, hates physical formats