Yea, it was weird that shes not trying to foster his language. He's definitely more advanced then the adults/kids i've worked with who used modified sign. They paywall so much of that channel now behind patreon that its hard to learn any info anymore. The family privatized the link he gave to go to as well.I'm not sure about the whole genius bit, but he does seem like he might not be 100% potato. Mom could be doing a lot more for him language-wise. He just sort of grunts and giggles, which is cute if you're a baby, but he's nearing three. There are babies who can communicate better with rudimentary sign language (things like more, eat, drink, done, play, etc.). His facial features are pretty reminiscent of Downs Syndrome, so I bet his capacity for learning is in the same ballpark.