plodding inarticulateness
Member
Of course we can. It's what logic is for ... comparing and testing our assumption.
Again, this is what logic is for, since we humans never have "sufficient information". We have to try and assemble what little information we do have into a picture of "the truth", and then trust that this will be accurate enough to function for us. And that's what logic us used for ... testing that assemblage as we're putting it together in our minds.
No, logic is used to make deductively valid inferences from a set of valid premises. Hence, without sufficient information upon which to draw the facts needed to make the valid inference, you will be unable to apply logic.
Since as you say, in cases where we humans do not have sufficient information to make valid deductive inferences, we make (hopefully) reasoned and rational guesses with the information we do have. If those guesses work out it provides us with some confidence in our rationale. There may be a future instance where our rationale falls short, in which case we try and figure out why and use it to modify our rationale and subsequent expectations.
This is an empirical process, not a logic process.
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