The Pennsylvania Gazette – â€œThe Thumb Generation is kids who use their thumbs for mostly texting with their phones, things like that,â€ Yim explains. â€œAnd they do it so much, the thumb has become the dominant finger. So they donâ€™t point with their index finger; they point with their thumb. When they go up to a doorbell, they donâ€™t use their index fingerâ€”they use their thumb!â€
I give this article a thumbs up.