You didn't stick your hand in a spinning fan because you fancied a cooling off.

Speck challenged, then walked over to a spinning fan and threw the small bird in.

And then it falls, speeding down with such swiftness that it becomes a blur, like the blades of a spinning fan.

I could hear every whisper of wind around every lazily spinning fan blade in the room, and all of them murmured gentle music together.

This allows for smaller form factors, longer battery lives and sleeker designs, without the need for cooling solutions like spinning fans.