Texting gets a bad rap. It’s blamed for everything from fostering social isolation to increasing teens’ risk of ADHD to driving down adolescent self-esteem to damaging the spine – a phenomenon known as “text neck.” But some technological and medical experts say the negativity is unfair and overblown. Texting can and should be a positive force in people’s lives, both in terms of emotional and physical health, they say – so long as it’s used correctly. “I have a reputation as sort of being the Darth Vader of anything that has to do with texting,” said MIT psychologist Sherry Turkle, author of “Reclaiming Conversation: The Power of Talk in a Digital Age.” “Which, of course, is not really what I have said or am saying – the problem really isn’t that people have this new, interesting, intimate way of touching base .