Even back in the iPod days, one of the stated goals of the designers at Apple was to make their handhelds feel like a singular piece, like something that natura

Even back in the iPod days, one of the stated goals of the designers at Apple was to make their handhelds feel like a singular piece, like something that naturally grows that way (think fruits, crystals, etc) instead of disparate pieces tenuously held together. An impression of solidity falls in line with that idea.