The Japanese are great at inventing complex systems of rules, and not so great at explaining those rules to foreign visitors.
A world with a sudden limit on air travel would be tremendously different from the one we live in now.
A smartphone links patients' bodies and doctors' computers, which in turn are connected to the Internet, which in turn is connected to any smartphone anywhere. The new devices could put the management of an individual's internal organs in the hands of every hacker, online scammer, and digital vandal on Earth.
The embrace of a new technology by ordinary people leads inevitably to its embrace by people of malign intent.
A whole bunch of big technological shocks occurred when Asian innovations - paper, gunpowder, the stirrup, the moldboard plow and so on - came to Europe via the Silk Road.