i'm mostly talking about the inconvenience of cables and outlets to store the knife so it charges. sharpening a knife takes less than a minute if it's being regularly sharpened afaik.

But you don’t use a knife so much it wouldn’t have time to charge while you don’t use it 🤔

To continue your analogy with sharpening, it’s basically a knife that sharpens itself when you don’t use it.

tech

Ultrasonic Chef's Knife

Hard sell. A knife that needs to be charged is about as inconvenient as one you have to sharpen. The lack of stickiness is pretty cool though