Is there Faith in Atheism?

I recently came across this FB post:

"Atheism brags the efficiency and sufficiency of science to explain reality, philosophy and ethics. Well, scientism is self-contradictory since what is affirmed (that is, the claim that science is the only valid method to know reality) cannot be proven through the use of scientific method. Well, it takes "faith" for an atheist to believe it. "I believe it because I believe it so."

First, science does not claim to explain philosophical discourses and ethical questions, but science helps philosophy and ethics understand some of its concepts better and more accurately. I have not seen scientists even trying to propound Kant's concept of duty as something that can be explained by science. Nevertheless, science research in various fields such as sociology have constantly demonstrated that the creation of human societies has concomitantly resulted in the establishment of social duties and responsibilities. The fulfillment of such duties and responsibilities is a trade-off for the benefits the individual can receive through a society such as security, and a sense of belonging and identity among others. Ethical questions have been better understood in the light of scientific discoveries such as for example the concept that the white race is superior to the black race. Science has taught us that the first human beings came from the Africa, more specifically the eastern side of Africa. In a sense, science helped us understood that we are, after all, Africans. This has greatly fostered a more tolerant and accepting view of other races. Indeed, it has made modern man realize that we are literally brothers and sisters.

Second, science does not exclude other forms of understanding reality. But science has proven itself competent in showing for example that only through testable means can we truly understand reality. In other words, science is the best way of understanding reality. The advances of the past two thousand years clearly show this, from the rudimentary but no less insightful ideas of the Ancient Greeks to the superstitious world-view of Medieval Europe to the science and technology driven milieu of the 21st century, science can undoubtedly be credited with helping more people achieve a better life - we now live healthier, longer and more comfortable. Science has played a role in all of these advancements. But in all these, science has never outlawed or suppressed the practice of other forms of understanding reality, indeed, it has showed man that science has a better, albeit imperfect, grasp of the best means of discovering ourselves and the world we live in. 

There may be faith in science, as when in 1963 Peter Higgs postulated, without then a proof, that a so-called Higgs-Boson can theoretically exist. Such postulate was only proven in 2012 with the experiments conducted at the CERN in Switzerland that indeed, there is such a thing as a Higgs-Boson. But faith in science is not blind, it is in fact an educated guess based on mathematical constructs and principles. If there is faith in science, it is that there is more to know and that our understanding of reality is changing, dynamic and fluid. In a word, there is more than meets the eye. 

Faith in science is not the faith of religion, where blind acceptance of unproven claims even when eventually disproved otherwise, are held in high esteem regardless of evidence to the contrary. Faith in science is faith that knowledge can be changed once evidence to the contrary is incontrovertibly proven. 

What is faith in science is nothing more than educated guess based on the principles that knowledge is never static. Religious faith claims finality, irrevocability and most of all, a suppression of reason to maintain its integrity.