The fact that Saroo's visual memory is clearly superior to his verbal memory could be a product of his learning style, but it could also be a symptom of growing up in poverty and not learning language skills. He relied on visual cues to locate himself and get by, and verbal cues simply weren't as useful for him as knowing that the train station looks a specific way and is near a water tower. This kind of memory isn't as compatible with the tools available to someone with internet access, as the internet overwhelmingly relies on verbal knowledge.