http://recode.net/2015/07/05/forget-bitcoin-what-is-the-blockchain-and-why-should-you-care/

Andrew: This matters greatly.

… This is the principle behind the blockchain, a powerful and widely misunderstood invention that could profoundly affect our relationship with the digital world. Most people are vaguely familiar with the blockchain as the technology underpinning bitcoin. Experts in a range of industries are gushing about its potential.