Those strike me as over-engineered and still pretty wasteful. Compare to e.g. ice cream freezers https://duckduckgo.com/?t=ffab&q=ice+cream+freezer&atb=v60-1&i

Those strike me as over-engineered and still pretty wasteful. Compare to e.g. ice cream freezers https://duckduckgo.com/?t=ffab&q=ice+cream+freezer&atb=v60-1&iax=images&ia=images https://duckduckgo.com/?t=ffab&q=ice+cream+freezer&atb=v60-1... But the point isn't that these things don't exist, it's that they aren't the norm. We do a lot of really obviously stupid things, even when better options are right in front of us.