Did you read the definitions like I suggested?
Let me help you out:
fal·la·cy
ˈfaləsē/
noun
?
- a mistaken belief, especially one based on unsound argument.
- vs
- fal·li·ble
ˈfaləb(ə)l/
adjective
capable of making mistakes or being erroneous)
An informal fallacy is an argument whose stated premises may fail to adequately support its proposed conclusion. The problem with an informal fallacy often stems from reasoning that renders the conclusion unpersuasive. In contrast to a formal fallacy of deduction, the error is not a flaw in logic.
There are a host of arguments out there that have been shown to have formal fallacies at the center of them, ontological argument, Pascal's wager, etc...
Fallible is a good thing, it's how science maintains integrity. Claims must be falsifiable, therefore scientists must allow that they are fallible. Religion, not so much. In religion you start off with a conclusion and work to support it, disregarding anything that doesn't agree with it like trimming away portions of a T-bone steak to call it a filet mignon... because that's what the label said it was.
So scientists don't create fallacies. They don't use flawed reasoning to come to conclusions, they misinterpret data and sometimes lie about it. Fallacies would be more like "hey this tree has an apple growing on it, therefore all trees have apples growing on them" where as fallible would be "hey there's an apple under this tree, this must then be an apple tree" when it's possibly not.