> But no matter how well the gene therapy works, the researchers recognize that Aissam may never be able to understand or speak a language, Dr. Germiller said. The brain has a narrow window for learning to speak beginning around ages 2 to 3, he explained. After age 5, the window for learning spoken language is permanently shut.

This is trivially false. How are you acting like this person can be taken seriously? At best, they're wildly hyperbolic in their statements. At worst, they're funded to push a polemic.