* No Reliable Global Database: There's no central organization tracking the language development of every child born.
* Variation in Development: Children develop at different rates, and language skills are just one aspect. Some might be early talkers, while others might be late bloomers.
* Definition of "Talking": What constitutes "talking" is subjective. Is it babbling, single words, or forming sentences?
However, we can say that:
* Most babies start babbling around 4-6 months.
* First words typically appear between 10-18 months.
* By 2 years old, most children can form simple sentences.
While there may be rare cases of children who started talking earlier, there's no way to definitively determine the youngest person ever.