Double-edged sword effect: the hidden worries behind convenience**

#### **1. Physiological cost**
– **Visual health crisis**: Global myopia rate surges by 20% due to screen use;
– **Deteriorated sleep quality**: Blue light inhibits melatonin secretion, and 60% of users look at their phones as the last thing before going to bed;
– **Thumb disease and cervical spondylosis**: Repetitive operations cause new occupational diseases.

#### **2. Psychological challenges**
– **Distraction**: Switch applications every 12 minutes on average (Microsoft Research);
– **Social media anxiety**: Comparative psychology leads to younger depression;
– **Digital addiction**: 67% of people will have “Nomophobia”.

#### **3. Social controversy**
– **Privacy leakage risk**: APP excessively requests permissions and becomes a data security black hole;
– **Digital divide widens**: Elderly people face difficulties in scanning codes and hailing taxis;
– **Alienation of interpersonal relationships**: The phenomenon of “silent table” at dinner parties is becoming more and more common.