That is certainly a hard problem, but how do you know such a system is better than simpler command based ones? Systems like you describe have a much higher chan

That is certainly a hard problem, but how do you know such a system is better than simpler command based ones? Systems like you describe have a much higher chance of taking the wrong action. Even humans do, when given ambiguous instructions. I know everyone loves to hate on Siri because it doesn’t do a good job of understanding anything complex, but I have always found it to be very reliable when you find the right command. As a result I use it much more often than google assistant (was team android/ pixel until 2020). I especially use it for timers, reminders, and navigation, and if my hands are not free, texts. Taking the wrong action breeds distrust, which I also think is not user friendly.