> "Alexa, how much does 4 million gallons of water weigh in metric tons?"
> "4 million gallons of water weighs about 15 thousand metric tons"
:-)
Not that this actually makes it easy to deal with unit conversion, because we still have to find the right gizmo to ask and phrase the question right. "Hey Google" for instance when I ask it the above question just tells me how much a million gallons of water weighs in pounds.
Not being sure if Google was right on that, I asked Alexa how much 1 million gallons of water weighs in pounds. It told me that 5000 gallons of water weighs 41726.320547 pounds. If I ask without saying I want the answer in pounds it then does tell me the answer for the requested 1 million gallons in pounds.
But if we happen to ask the right gizmo, and happen to phrase it just right...unit conversion is no problem for Americans.
(Of course I still had to do it by hand, because Alexa's answer disagreed with the answer at the top of this thread, and I am not confident that when Alexa disagrees with an HN commenter that Alexa is right).