1The mathematical proof was constructed infallibly, leaving no room for alternative interpretations.
2Is it possible to make a moral judgment infallibly, or are such decisions inherently subjective?
3The new encryption algorithm was designed to operate infallibly, even under extreme conditions.
4Avoid claiming that your method is infallibly accurate; acknowledge the potential for error and discuss mitigation strategies.
5There is a long tradition of philosophical debate about the possibility of infallibly certain knowledge, from Plato's theory of forms to modern critiques of foundationalism.