Here is the short video I watched regarding Helen Keller:

https://worldtruthvideos.website/watch/hellen-keller-is-a-jewish-backed-myth_Ju2rlIuDdAYDc3N.html

It makes some good points.

Note: She was 100% Blind and 100% deaf.

Her eyeballs had been removed. And she could not detect sound except as vibrations through her fingers. So the video is right. Her ability to get "data" is exceptionally limited.