When confronted with information that the economy is actually improving despite their strong belief that QQE will not help the economy grow, these critics will try to reduce such dissonance by denying this information or by arguing that even though economic developments are favorable at the moment, they will definitely deteriorate in the future.
As data scientists you probably immediately think of all the possibilities data science offers for the railway industry. There is even such a thing as the "Internet of Trains". It's a term describing the benefits that big data brings to the railway industry, making trains more efficient, more reliable and less harmful to the environment.