You don't really remember who invented global warming do you?
It's not as far fetched as you think. Before she got into politics,
Thatcher was an industrial engineer and is the mother of modern
ice cream. She calculated the exact proportion of air that could
be added to ice cream and still sold as ice cream.

Now except for home made and few specialty products, all ice
cream is made from a variation of her formula.

I'm certain that the concept of "overrun" long predates Maggie.

All ice cream needs at least a little air, or it would be very hard and
dense. In the US, the maximum amount allowed is 50% by volume.