[acrobionic]

"Each statement can be true in one context and false in another."

Is this statement itself true in all contexts, or only in some contexts? If it's true in all contexts, then we need an explanation for why this specific statement gets an exception from the rule. If it's false in some contexts, then there exist some contexts where absolute truth/falsity exists, so we can go ahead and use boolean logic just fine in those contexts.

[thiagoharry]

Yes, in some contexts absolute truth/falsity exists. For example, in a list of exercises about Boolean logic. Or circuits modelled after Boolean logic.