Gillian Tett has an important message for business executives: if your company doesn't work cohesively, it's "deadly." She explores that topic in her new book, The Silo Effect , which details the detrimental repercussions of "tribalism" and "tunnel-vision" in an office environment. During a conversation with HuffPost Live on Monday, Tett explained how this phenomenon prevented Sony from capitalizing on its resources and creating a "digital Walkman" -- paving the way for Apple's iPod dominance in the process.

Watch Tett discuss Sony's missteps in the video above, and click here for her full HuffPost Live conversation.

http://www.huffingtonpost.com/entry/why-sony-missed-out-on-inventing-the-ipod_55e4b5a1e4b0b7a96339eac9