expression, noun
feeling of being in a completely different era; sense that the world has changed dramatically
Used when something makes you feel as if you have stepped into another age, often because of rapid social or technological change. Commonly appears in the pattern 〜に隔世の感がある.
スマートフォンの普及には隔世の感がある。
The spread of smartphones makes it feel like we're living in a completely different age.
祖父の話を聞くと、
Listening to my grandfather's stories, I can't help but feel that the world has changed dramatically.