Unusual?
Interesting. How familiar are you with logic? I do not mean to offend, but that you ask such a question makes me think that you're not aware of it.
A priori vs.
a posteriori? Aristotle? Descartes?
Are you familiar with syllogisms? Perhaps that is the best way to explain this, as I can explain better with examples.
I don't have the time to explain now, as I need to get my kids to bed (and check their homework) now. I am happy to, though. Perhaps you can just read up on the fallacies of induction (the following is not an exhaustive list, but indicative)?
- Hasty Generalization
- Unrepresentative Sample
- False Analogy
- Slothful Induction
- Fallacy of Exclusion
To KNOW anything, is must be deduced. We can use induction to have an "idea" or "guess," but that's about it.
Hope that explains my point.
Thanks for asking!
I'll be back in a couple of days--maybe sooner. Forgive me if I don't respond right away.