MASSACHUSETTS | By Richard N. Cooper via Caixin | John Maynard Keynes gave an address in Madrid in 1930 called on the Economic Possibilities of Our Grandchildren and set a century in the future. The year 2030 is still 16 years away, but the world is almost there. Anticipating its arrival, a Spanish economist asked 10 prominent economists, among them three winners of the Nobel prize, to reflect on what the next century might bring in the way of economic and other developments, recently published as In 100 Years.