A few studies a while back showed that those 'brain training' apps on the Nintendo consoles didn't actually improve any IQ or mental agility, so it's fair to sa

A few studies a while back showed that those 'brain training' apps on the Nintendo consoles didn't actually improve any IQ or mental agility, so it's fair to say that these sort of captchas or similar systems don't either. https://www.sciencealert.com/do-brain-training-games-really-work-here-s-the-science https://www.sciencealert.com/do-brain-training-games-really-...