About eight years ago, when Android was still a mere twinkle-of-the-eye, Google's plans for its mobile OS involved buttons, BlackBerry-style. In a nutshell: no touchscreen. According to documents from the Apple-Samsung court case, the idea was dropped as soon as Apple launched the iPhone. "The product [Android] was designed with the presence of discrete physical buttons as an assumption," reads the document. "However, there is nothing fundamental in the product's architecture that prevents the support of touchscreen in the future."
Think about it. Had the iPhone not been released when it was, we may have had our first taste of Android through BlackBerry-style phones. Weird to even imagine.