People also don't realize how incredibly stupid humans can be. I don't mean that in a judgemental or moral kind of way, I mean that the educational system has failed a lot of people.
There's some % of people that could use AI for every decision in their lives and the outcome would be the same or better.
https://www.ti.com/lit/gpn/LM555
2mA minimum, and that's just q current. It's gonna be much higher when you're actually using it for a clock.
I'm sure the casio's main power sink is the display. I bet the refresh rate could be reduced for better battery life.