I don't think this is some insolvable problem. It's literally estimating the time it takes to cook rice, and many other rice cookers (including other Z models,

I don't think this is some insolvable problem. It's literally estimating the time it takes to cook rice, and many other rice cookers (including other Z models, apparently) do this just fine. It's not some edge case, it's literally the biggest question after you push start.