Is there any rule of the English language that allows us to tell when the claim "As are B" means every single A is a B, and when "As are B" is a generalization that means only that some or most As are B?
This issue comes up in PT57, Section 2, #12.
The conclusion says that "criminal organizations will try...."
But the premise told us that MOST criminal organizations' main purpose is profits.
If you add the correct answer to the argument, it's sufficient to prove that MOST criminal organizations will try to become involved. But the conclusion here is "criminal organizations", which grammatically seems to mean all criminal organizations. So the conclusion technically is still not fully proven even with the "sufficient" assumption added. The only way the correct answer is sufficient is by reading the conclusion as giving us a statement about "some" or "most" criminal organizations. How does this add up? Any thoughts?
Here are additional example sentences to explore the issue:
"Dinosaurs are extinct." Does that mean some dinosaurs or all dinosaurs are extinct? I submit that it clearly means all, and not only some.
"football players with at least one year of experience in the NFL are used to taking hits." Does that mean some or all players with one year of experience? I submit it means all NFL players with at least one year of experience.
"Criminal organizations will try to become involved in tech revolutions." Does this mean some or all crim organizations will try to become involved? If the first two example sentences apply to "all", then what distinguishes this last example from the others?
The issue seems to be that sometimes plural nouns are referring to all members of the group, and sometimes they're not. But what are the rules governing such interpretation? "Videogames are fun." Is that asserting that every single videogame is fun? I submit that it's ambiguous. Naturally, I would not think that claim commits one to thinking that every single video game is fun...maybe there are a lot that are not fun, but generally, videogames are fun. However, in a hyper-literal logical thinking type of analysis, I could easily see that sentence implying that, yes, all videogames are fun.
How about this example? "Apples are fruit." vs. "Apples are healthy." The first statement means all individual apples are fruit -- it'd be very odd to think it leaves open the possibility that some apples are not fruit. Yet the second statement seems to mean that apples generally are healthy and is not asserting that every single apple in the universe is healthy...some might be unhealthy/poisonous etc. But WHY do we interpret these sentences differently and how can one tell the correct interpretation?