Blockchains are network native institutional technology. The technology forms networks that help coordinate the actions of crowds, platforms, and machines. All the projects and interoperating protocols enable the digital equivalent of Lego blocks for economic rules. A critical aspect of blockchains is the concept of decentralisation. In this video, I discuss decentralisation as it applies to public blockchain networks and in particular, it describes the general philosophy that underpins the technical architecture of Cardano.