Larry Magid: The disappearing off switch
Briefly

The transition from simple, clear on/off switches to ambiguous buttons in modern devices causes confusion about power states. Older technology like TVs, radios and telephones indicated clear power statuses and required straightforward operations. Unlike past devices, modern electronics often rely on push-button controls, lacking visible indicators for their status. Users must adapt to a new norm that advises proper shutdown procedures to prevent data corruption, which contrasts with the simplicity of childhood devices that operated with ease and certainty.
The same buttons that turn on my PC, phone, and TV also turn them off - but rather than having an on and off position, they're just push buttons.
Life would be easier if I could just flip a switch to the on position and wait for it to power up, just like I waited for my childhood TVs and radios to warm up.
You're still advised to properly 'shut down' a PC or Mac before turning it off. That allows the system to close programs correctly, save its state, and avoid potential data corruption.
Ambiguous switches in modern devices lead to uncertainty, as you can't always tell whether they are on or off at a glance.
Read at The Mercury News
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