It is at least logically possible for evolution to be true, even if tiktaalik was never found or never existed. In the same way it is logically possible for you to buy dog food even if you don’t have a dog.
Yes, of course. I still can't discern why you post sentences like these.
My point is that a prediction is not invalid just because it doesn’t “follow logically”
And I don't know what you mean by invalid here. I expect a prediction to be correct if it is a valid deduction. Is that what you mean? Sometimes, a prediction is just a guess (not deduced), as when one chooses lottery numbers. I wouldn't use the word invalid to describe that.
And I think you're still conflating logically possible and logically follows. Why does that first comment address logical possibility? You've had both phrases defined for you in this thread. To review, logically possible means that a claim does not violate the laws of reason, that is, isn't self-contradictory.
@Pogo just gave you a good definition of logically follows: "
Logically follows" refers to the idea that one statement or proposition can be inferred or deduced from another statement or set of statements based on the rules of logic. In logical reasoning, if one statement is true and another statement logically follows from it, then the second statement must also be true. This process of inference is fundamental to deductive reasoning, where conclusions are drawn from premises based on logical principle."
you buying dog food increases the probability that you have a dog (this is why this is a good prediction) even if it doesn’t follow logically.
But it does follow logically that a person who buys dog food is more likely to have a dog than one who doesn't. It's also logically possible that the guy who buys dog food doesn't have a dog while one who never buys it does, but it doesn't logically follow that either does or does not feed a dog.
Logical possibility and logically following are at opposite ends of a probability spectrum. The first refers to things not known to be impossible however unlikely they are. The latter refers to things considered demonstrably correct. We say that it is logically possible that earth could be impacted by a large asteroid this year, but absent sighting a candidate impactor on the proper trajectory, this logically possible idea is very unlikely. If, however, we do identify such an object with an ephemeris that suggest that impact is highly likely or inevitable, we arrive at that conclusion via deduction.
Does that help?
What would help me is if you could write a simple sentence or two that you think others would disagree with, but you want to argue is actually correct (or vice versa), and which motivates you to pursue this line of questioning. And it should be the most general statement that you consider correct yet controversial. Write a sentence that you believe correct that you think others interacting with you here would disagree with that accounts for why you are discussing this topic.
Let's debate that. If this were a formal debate, we would begin with a resolution. Please do that. Here are examples from the Fulton Prize debates of the past few years:
2023—“Resolved: The U.S. Federal Government should enact an economy-wide carbon tax.”
2022—“Resolved: The U.S. Supreme Court should overrule the U.S. First Circuit Court of Appeals decision in Shurtleff v. City of Boston by holding that the City of Boston’s third flagpole available for raising private flags is not government speech.”
2021—“Resolved: The United States should restrict the activation of the 1951 Mutual Defense Treaty with the Republic of the Philippines to an armed attack on the territories, islands, and armed forces under the administrative control of the Philippines.”
2020—“Resolved: The United States should adopt a constitutional amendment to require term limits for justices of the Supreme Court.”