On the crowded subway, Emma noticed her phone buzz in rhythm with the tense energy between two arguing passengers nearby. Strangely, she realized each vibration mirrored a hidden emotion—anger, anxiety—projected through their devices. Suddenly aware of this silent connection, she debated intervening.

"Hey, is everything okay?" she asked gently, defusing the rising hostility. The couple quieted, surprised but grateful. Emma smiled, realizing empathy had a new, digital language.