In recent months, YouTube has secretly used artificial intelligence (AI) to tweak people's videos without letting them know or asking permission. Wrinkles in shirts seem more defined. Skin is sharper in some places and smoother in others. Pay close attention to ears, and you may notice them warp. These changes are small, barely visible without a side-by-side comparison. Yet some disturbed YouTubers say it gives their content a subtle and unwelcome AI-generated feeling.

There's a larger trend at play. A growing share of reality is pre-processed by AI before it reaches us. Eventually, the question won't be whether you can tell the difference, but whether it's eroding our ties to the world around us.