Too often, science confuses means and ends, imagining, for instance, that if an H-Bomb  or a humongous dam can be built then that's ample reason to build it. 

Reason itself, even, can become the enemy of humankind, as happened w/the Holocaust, which relied upon highly advanced styles of rational thinking--engineering, mass transit, electrified communication and power production, chemistry, psychology--to carry out a terrifying irrationality.

Science and reason may have a deep skepticism of dogma and convention built into them, but too often that skepticism doesn't extend to the moral and social ramifications of science and reason. 

This is why 19th/20th c. European, Japanese and American imperialists, for example, felt no compunction about conquering and enslaving technologically backwards indigenous peoples: they understood their superior scientific and engineering as ample motive for conquest and empire.