Whataa beautiful analogy!

I’ve also heard this.

I agree completely but the suction required for something without a brush is huge and you’ll need a much bigger motor and battery. I had a vacuum that didn’t auto empty for years and while my new one is a huge upgrade it was a time saver just to have one do the vacuuming and then empty it manually or every other time if there wasn’t much dirt.

Concept of a vacuum.