During the pause while Angel was flipping through the pages, Luigi voiced his discovery.
Angel's hand stopped momentarily, hesitated, and then said, "Actually, there is another possibility. The pronunciation of 'Nak' perfectly fits the phonetic comfort zone of the Invention Mouse."
The so-called "phonetic comfort zone" refers to syllables that align with vocal cords, allowing easy and simple pronunciation in a well-fed environment.
For example, most humans, including the Wise Man, Carabits, Xis... etc., during infancy, the easiest syllables to produce are "eh", "ma", "ah", etc.
This might also explain why the pronunciation of "mother" is similar in many languages on Earth.
Because these are the syllables that infants can easily produce, belonging to the phonetic comfort zone.
The same reasoning applies to the Invention Mouse, whose vocal cord structure is different from humans, and their phonetic comfort zone is certainly different as well.
