Older adults who regularly use the internet probably have more mental capacity. It is possible to do either mindless or mentally stimulating things on the inter

Older adults who regularly use the internet probably have more mental capacity. It is possible to do either mindless or mentally stimulating things on the internet, and I doubt that just encouraging seniors to use the internet will reduce the risk of dementia. You could do a randomized-controlled trial where half of the subjects are given IPads or something similar and the other subjects are given the same amount of cash. I predict there will be no significant difference in outcomes.