When you buy rice crisppies, you of course know that you are buying mostly air. But they taste pretty dang good. But what really makes rice crisspies interesting, and a fun fact for you, is that they are actually puffed up under a vacuum. That's why you can take one while it's still relatively solid and hold it against your tongue long enough that part of it dissolves away and it will suction onto your tongue with quite a lot of power. But what's really interesting about this is that not only are you buying mostly air, but you aren't even getting your fair share of air. I just think it's pretty impressive, to the point of appreciation, that Mr. Kellogg was able to make actually a really good product while being so resourceful at the same time. Resourcefulness is something our generation lacks, but we still get some holdovers of ingenuity passed onto us.