The Saw of Science
Consider science: it is also a tool which can be used to destroy or improve, not physical objects but ideas. A person can choose to destroy an idea by cutting it off, or improve it by pruning away the bad branches. You might reply: "Science depends on truth and so it can only cut away the bad. If it cuts down the idea, the idea was bad." This isn't honest. All ideas are subject to denial. All ideas depend on assumptions which can be shown to be suspect or "wrong" given the right context. The result of wielding the saw of science is very strongly dependent on the intent of the wielder. This intent is often an a priori attempt to disprove challenging ideas. This is a terrible way to use such a powerful tool.
It seems to me that a person interested in truth should turn science on their own ideas as a skeptic. One way to do this is by attempting to find the truth in those things that are challenging. If we do this we will find and fill the gaps in our own ideas. This goes beyond science to things about which science has nothing to say as well. In our lives, as we consider the ideas of other people we know to be sincere and intelligent, it damages us if we do not consider their ideas as seriously as we consider our own. The world is vague and as much as we want to have clear lines we cannot.