‘Frankly, technology is often baffling to me, too. Luckily, I have kids who delight in parenting me – advising, explaining and guiding me, on all things digital. But studies suggest that this helpfulness might not be as beneficial as we think. Grappling with new and baffling things forces the ageing brain to work in novel ways. A recent study from the University of Texas involving more than 200 elderly adults found that those who engaged with technology had better cognition and memory than their non-engaging peers.’ Which of the following assumption is made in the above passage?