Please look into the difference between paradox and logical fallacy.
(Sigh.) OK, I'll explain it. (Another sigh.) Paradox relies on something being true in one sense but not another. For instance: "Less is more," "He who loses his life shall find it." "It's a small world."
The Second Person of the Trinity, eternally existent Word of the Father, omniscient, assumed a human nature and had the brain, and hence the intellectual limitations and processes, of a human infant.
So yes: the Omniscient had to learn to say "Ma-ma."
The Incarnation of Christ Our Lord is a source of endless paradoxes, because of the comprehensive differences beween infinite God and finite Man.
Life is a paradox ("The child is father of the man.") Love poetry, also, is full of paradoxes ("So happy I could cry" "Parting is such sweet sorrow") and liturgical poetry is too, because Liturgy is full of life and love.
You could say this is "foolish wisdom."
And if you said that, you'd be beginning to understand paradox.