The conflation of faith as “unevidenced belief” with faith as “justified confidence” is simply a word trick used to buttress religion. In fact, you’ll never hear a scientist saying, “I have faith in evolution” or “I have faith in electrons.” Not only is such language alien to us, but we know full well how those words can be misused in the name of religion.
The constant scrutiny of our peers ensures that science is largely self-correcting, so that we really can approach the truth about our universe.
But it is important to guard against the notion, so often merely assumed by working scientists but occasionally trumpeted affirmatively by certain mouthpieces thereof, that the instrumental effectiveness of particular sciences provides prima facie proof that their underlying theories correctly describe the underlying reality of the world they purport to.
But science is not immune to the challenges of representation and interpretation which all human attempts to discover and describe the nature of reality are subject to. Science cannot finesse the influences and distortions which its practice by real human beings in real social contexts impose on it. Science cannot evade the problems of justification raised by choices driven more by aesthetics and intellectual convenience—like the preference for theories which are beautiful or which satisfy Occam’s Razor—rather than any a priori necessity. Science possesses no special defenses against the radical skepticism which calls into question our very relation to the world and each other. Science, in other words, does not hold a privileged position outside the core intellectual puzzles of human cognition and relation to reality.