It aims to connect the various parties involved in international trade in order to cut the filing, verification, processing and coordination costs associated with cross-border transportation - according to Maersk, documentation and bureaucracy can represent up to one-fifth of the total cost of moving a container. Many start-ups are developing autonomous robots that operate alongside humans and track inventory on shelves in warehouses, factories and distribution centres. A German online retailer that uses machine-learning algorithms to predict what customers are going to buy has developed a system so reliable that it can predict with 90 per cent accuracy what will be sold within the following 30 days (The Economist, 2017b). This results in better supply management by cutting down inventory, and reduces the time required for delivery.