Context.
When context is missing, vowels tend to get added. In many of the abjadic scripts, vowels gradually got added (often as dots) to prevent ambiguity that was present in the older scripts.
And Hebrew is not completely vowel-less. Aleph/Alpha is a vowel, and is explicitly written in a number of abjads (or built into syllabic versions of certain glyphs).
It doesn't surprise me, either. Think about the first sounds a baby makes... a, a, aaaa (with hand stretched out... feed me/give me), mamama bababa, papapapa. In many languages, mama papa aba, ama, are the words for mother and father and in many abjads, the a is explicit, which means you ony have to guess at the other vowels, which are often less frequent that "a".
When context is missing, vowels tend to get added. In many of the abjadic scripts, vowels gradually got added (often as dots) to prevent ambiguity that was present in the older scripts.
And Hebrew is not completely vowel-less. Aleph/Alpha is a vowel, and is explicitly written in a number of abjads (or built into syllabic versions of certain glyphs).
It doesn't surprise me, either. Think about the first sounds a baby makes... a, a, aaaa (with hand stretched out... feed me/give me), mamama bababa, papapapa. In many languages, mama papa aba, ama, are the words for mother and father and in many abjads, the a is explicit, which means you ony have to guess at the other vowels, which are often less frequent that "a".


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