My point is that a prediction could be valid even if it doesn’t follow logically
I've explained that I don't understand what that means. I would understand saying that a prediction might be correct even if it were a guess. Following logically means deduced, and as already stated, if one's premises are true and one's reasoning is fallacy-free, then one's conclusion is a logical deduction, and it will be correct. If that's not the process you used to predict, then your prediction becomes much less meaningful, approaching a guess.
If you would write plainly like that, I could understand you. Also, you still haven't explained why you want to make whatever point you're trying to make here. Knowing that would help me understand your words, what they probably mean.
You buying dog food doesn’t follow logically from the hypothesis “you have a dog”
What does that mean? That dog food in my cart doesn't mean I have a dog. If so, agreed.
Please try plain speaking rather than using words and phrases like valid and logically follows. Words like implies and likely will be better understood.
Logical possibility and logically follows are related in that if a prediction logically follows from a theory, then it is not logically possible for the theory to be correct if the prediction is wrong.
OK. Why did you want to make that point? Do you have a particular theory or prediction in mind? It's hard to believe that you have expended this much effort to make that point if it isn't part of a larger point you want to make.
from the fact that you have a dog (hypothesis) it doesn’t follow logically that you would buy dog food…… but that would still be a valid prediction.
Please rewrite that sentence without using the words follow logically or valid. I can't tell what you mean - really. To me, it does follow logically that if I have a dog, I am likelier to have dog food in my cart, and contrariwise, if I have dog food in my cart, I am more likely to have a dog waiting at home. Also, nothing that doesn't follow logically from a model, that is, is not a sound deduction, should be called a valid prediction whatever that means to you. If your prediction is not a sound deduction, it is a guess.
ok
Prediction must follow logically from the theory hypothesis/theory/model
I say NO
I'm still lost. Prediction must follow logically from the theory hypothesis/theory/model or what? It shouldn't be regarded as valuable? If so, that a debate resolution I can agree with.
But go ahead and make your argument for why predictions don't need to be logical consequences of one's working model or hypothesis. And also, why you want to make that point.