Is the explainer video illustrating the new Twitter bird logo a nod in the direction of the imfamous Pepsi logo design PDF? Seems like it. The new Twitter logo is a slight departure from the original – and I love their explanation of how the lines were derived. Our new bird grows out of love for ornithology, design within creative constraints, and simple geometry. This bird is crafted purely from three sets of overlapping circles — similar to how your networks, interests and ideas connect and intersect with peers and friends. Whether soaring high above the earth to take in a broad view, or flocking with other birds to achieve a common purpose, a bird in flight is the ultimate representation of freedom, hope and limitless possibility. (Thanks Doug – @stop) Not quite as crazy as Pepsi, though – remember back to 2009 when the Arnell Group’s design brief for Pepsi’s new logo was leaked. The brief contained all sorts of crazy references, ranging all the way from the golden ratio to equating the Pepsi logo to the Mona Lisa. Download the Pepsi Gravitational Field PDF From Fast Company: Every page of this document is more ridiculous than the last ending with a pseudo-scientific explanation of how Pepsi’s new branding identity will manifest it’s own gravitational pull. But the craziest thing is that this pitch worked! Pepsi bought it — reportedly for several hundred million dollars — and now we have “the emoticon of a new generation.” On a final, similar branding note – I sincerely hope the Twitter rebranding doesn’t suffer the same fate as Tropicana..