There will be less output available in 15 to 20 years when our relatively few grandchildren - who will produce that output - will have to share it with our many retired baby - boomer children 再过15至20年,我们的孙子辈长大了,他们人口本来就少,生产这些产品的产能有限,而婴儿潮时代人的儿子辈数量众多,且都多已退休,那时候就会出现我们的孙子辈和儿子辈争产品的局面。