Very recommendable! Bell was involved in so many things! His care for and teaching hearing impaired children (Alexander Graham Bell Association for the Deaf and Hard of Hearing); his lifelong marriage to a deaf woman Mable Hubbard Bell; his contributions to early flying machines, metal detector, and hydrofoil; his support for Maria Montessori; founding of the National Geographic Society (Bell was its second President) ...
It is important to point out that the telephone was not invented once, but multiple times. One of the most protracted patent battles in the U.S. was about the telephone. This documentary does not even mention e.g. the German inventor Johann Philipp Reis, who preceded Bell in inventing the telephone.
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