Thanks to fMRI and other brain scanning technologies, we now know that when we learn, our brains physically change. This fact is the basis for the claims of the

Thanks to fMRI and other brain scanning technologies, we now know that when we learn, our brains physically change. This fact is the basis for the claims of the "brain training" industry. The reality is that our brains are constantly changing. I could memorize a thousand fart jokes and my brain would have changed. Does that make me more intelligent? I think the "brain training" apps are only really good for older or other people who are at risk of dementia, or other cognitive diseases, and even then I'm pretty sure the science is out on most of that.