Exactly my point:
- Why not switch on the lights as soon as I open my condo (when it's dark outside)?
- Why not switch on the light when my alarm bell rings?
- Why not close all doors of my car as soon as I leave - nobody else is inside?
- Why not keep open the bus and street rail doors just by approaching them?
- Why not flush my personal toilet as soon as I am leaving it?
- Why not close the front door of my house as soon as I am leaving it - and re-opening as soon as someone is approaching the door from inside?
- Why not save my documents as soon as I am typing? Who invented the Save button?
- Why not start my laptop as soon as I open the lid?
- Why not open any public door as soon as I approach (or stand waiting in front of it)?

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