We make statements like "This table is composed from atoms". This statement must be true or false. But what if tomorrow the atomic theory is completely abandoned and we work with another theory where the concept of "atom" isn't contained. Would the statement now be true or false? If it is false then this clearly shows that the statements depend on what model/theory we adopt.

Example 1 Here is a link for the definition of sea from Wikipedia. Suppose that one day suddenly all the salt from all the "seas" disappear (but nothing else change). Now would it make sense to say for example "A shark swims in the sea"? This contradicts our notion of "pictorial" (I don't know the technical term) understanding of what "sea" means. Even if nobody knew that all the salt went off just by looking he can see that "A shark swims in the sea". Now is this statement true or false?

Example 2 Suppose someone is asked to answer the following question. "We have a box with 2 oranges. Now we add other 3 oranges. How many oranges we have? Would it matter if we added had initially 3 oranges and then added 2?" If he answers, "Look it depends if the real world works like maths do, i.e. the commutative property works etc", I think everyone will laught at him. We haven't find a single example where the maths doesn't work in real world. But this doesn't mean we won't find. And of course this doesn't mean that math don't work if we find one. But when we make statements we use theories or maths in order to evaluate their truth value. Why we do that if the statements should be evaluated only according to real world?

• Perhaps you are not aware there are different types of truth. You seem to assume there is only on type which in your examples are purely sense based: your sight, taste, smell touch and hearing. There are contingent TRUTHS which can vary due to time & circumstances. One day x is true another day x is false. Then we also have a category of permanent truth values that NEVER CHANGE: once true x is forever true, once false x is forever false -- it does not flip flop value as contingent truths do. If a statement is contingent then it can be true & later be false. Which type of truth do you mean? – Logikal Aug 1 '20 at 17:27
• "This clearly shows that the statements depend on what model/theory we adopt" is false. It may happen, however unlikely, that the atomic theory is wrong, but then "table is composed from atoms" is already false today, we are all just mistaken about it. The truth does not change, only our state of knowledge does, and us stating that something is true does not make it so, or otherwise. – Conifold Aug 2 '20 at 2:37
• @Logikal Isn't "The table is composed from atoms" a contingent statement? What I am saying is if the truth value of the statement depends on the theory because the terms we use in the statement are relevant to the theory (e.g. atoms). Can we say that because we have proved wrong the theory (e.g. atomic) then the above statement is false irrespective of the fact that we thought it was true as Conifold said? – ado sar Aug 2 '20 at 22:11
• Technically yes but you may agree that is a bit extreme. You can add all the information you actually posses about the subject that is relevant: location, size, color, posture or position of the subject and so on. If I read your sentence & can ask you three or more question about your original sentence then try harder to be more detailed & specific. No one should have to read vague or poorly worded sentences that leave reader WONDERING what is meant. There should be no open ended sentences or vague terms that are not defined. We see this frequently in regular life & they wait to be questioned. – Logikal Aug 2 '20 at 22:49
• We can agree this what you discrrbe is what happens frequently between people. However are you telling me the conversation NEVER EVER EVER gets interpreted incorrectly. Suppose the conversation was more complex: let's say a moral topic is your preference ALWAYS going to work? You like other people do stuff because it is EASIER FOR YOU than to add all these specific and details. That is MORE WORK. When the more complex conversations arise those details and specifics will COUNT FOR SOMETHING. All the stuff you are trying to avoid will make your life easier when the tougher conversations occur. – Logikal Aug 2 '20 at 23:04