Cleanliness is overrated. Sure, it's great for surgery and if you actually have a wound, but your immune system needs pathogens to train on, or it does silly things like attacking your body, or reacting to pollens.
What does 'civilized' mean? Usage here seems to be another way to express your own biases. I consider myself civilized, and have a rich and meaningful life, but my house is much less clean than many. I prefer to spend my time and money on things other than being clean and tidy (beyond a basic level of functionality)
This is only to make getting a fix faster - A-GPS downloads the almanac data via the internet (fast, but needs internet) instead of directly from the GPS satellites (slow but works everywhere). It doesn't make it any more accurate.
The HP 48G series graphing RPN calculator had such a powerful, software-controllable IR LED with a learning remote program someone wrote that could control TVs roughly 70' / 20 m away as long as the TV had a sensitive enough IR receiver circuit. Some hijinks might've happened in the physics lecture hall but no exams or lectures were harmed.
By far the biggest source of carbon emissions is coal. The others make an impact too, but if we're not addressing coal, there's almost no point addressing the others.
People with knee problems, areas with hills. An ebike is still active movement; sure you're not getting any cardio, but it's immeasurably better than driving. If this (or any ebike) is a thing that gets someone on a bike that otherwise wouldn't be on a bike, it is a good thing. For some it might be a stepping stone, for others it allows them to ride where they can't/won't ride at all.
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