After the fall of the Tokugawa dynasty in Japan, during a period of the Meiji Restoration, the incumbent nobility warrior class (known as the samurai) saw themselves deprived of purpose for existing. Their roles in society had been displaced by modernization; their lords replaced by businessmen.
Displacement is not a new concept. In recent history, our 2008 economic recession (spurred by the collaspe of the real estate market, caused by corrupt loan practices) led to significant numbers of workers suddenly without a job, which led to a lot of people pursuing higher education and/or changing their career.
However, not everyone is so flexible. Consider this story, headlined, "Awaiting Trump's coal comeback, miners reject retraining":
WAYNESBURG, Pa. (Reuters) - When Mike Sylvester entered a career training center earlier this year in southwestern Pennsylvania,