I recently backed NeoBlade, which is an ultrasonic multi-blade cutting device for crafters. https://www.kickstarter.com/projects/hozodesign/neoblade

TL;DR it's really freaking cool, though the blades do seem to get dull fairly quickly. That said, they are made of a radically different grade of steel.

If the tech in the NeoBlade has been adapted successfully to the chef's knife, then all of the haters are going to sound like all of the early "you don't need an air fryer" pundits who totally missed the point and were clearly wrong.

Also, all of the "why would I care if I can aerosolize citrus" commenters have clearly never worked in a cocktail bar. Which isn't a knock; this is Hacker News, after all. Just know that there are people who make fancy drinks who would pay a lot to be able to do this easily. If you are the sort of person who spends time thinking about clear ice, you don't need this explained to you.

I'm still in the camp that air fryers are stupid. A convection oven does literally the same thing.

Also, portable air fryers make such small servings that they're useless for people with families. What the hell I going to do with three chicken wings?