这就与文字游戏无异了。

Webster Dictionary 对 fact 和 opinion 做如下解释。opinion和是否可证实无关。您要是想给这个词从新定义，那也没问题。但是您这个新对定义和一般人对这个词的理解不同。既然和词典的定义不同，那发文是最好说明。不过按您的“观点”（opinion）定义，说观点没有对错，也有问题。不能被证实，与是否是事实，是两回事。比如说哥德巴赫猜想，要么是正确的，要么就是错误的。可是现在既不能证实，也不能证伪。可是说哥德巴赫猜想没有对错，显然是不对的。问题在于，对错，和能否证实其对错，是两回事。您给出的fact的定义，似乎冠以factual statement（有关事实的陈述）更好。fact（事实）就必须是真实的，这和能被证实或证伪不是一回事。既然想要有共同语言，那最好还是用词典里的定义为好，那是大家都接受的。

fact

 noun

Definition of fact

1a: something that has actual existencespace exploration is now a fact

b: an actual occurrenceprove the fact of damage

2: a piece of information presented as having objective realityThese are the hard facts of the case.

3: the quality of being actual : ACTUALITYa question of fact hinges on evidence

4: a thing done: such as

a: CRIMEaccessory after the fact

barchaic : ACTION

cobsolete : FEAT

5archaic : PERFORMANCE, DOING

in fact

: in truthHe looks younger, but in fact, he is 60 years old.

opinion

 noun

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1a: a view, judgment, or appraisal formed in the mind about a particular matterWe asked them for their opinions about the new stadium.

b: APPROVAL, ESTEEMI have no great opinion of his work.

2a: belief stronger than impression and less strong than positive knowledgea person of rigid opinions

b: a generally held viewnews programs that shape public opinion

3a: a formal expression of judgment or advice by an expertMy doctor says that I need an operation, but I'm going to get a second opinion.

b: the formal expression (as by a judge, court, or referee) of the legal reasons and principles upon which a legal decision is basedThe article discusses the recent Supreme Court opinion.