> the battery often dies around the time most people would consider upgrading anyway
Most people I know would prefer to just use the same phone they're familiar with until its physically not possible. They don't want to learn new things. They dont care about the latest features. It's an appliance; a means to and end and nothing more.
Define a protocol[0] that declares it implements `__getitem__` and type annotate with that protocol. Whatever properties are needed inside the function can be described in other protocols.
These are similar to interfaces in C# or traits in Rust - you describe what the parameter _does_ instead of what it _is_.
I disagree with this take when it comes to safety-critical applications, especially when you are directly responsible for the safety of thousands of lives at any given moment in the day.
At the end of the day, I don't see potentially sacrificing the lives of multiple planeloads of people as a worthy tradeoff for foregoing verification that the controller is not under the influence of mind-altering substances when performing their job because it invades their privacy. Performing the job must inherently be approached with a collectivist attitude.
For other jobs where the magnitude of the mistake doesn't involve bodily harm or significant resources, I agree 100%.