this post was submitted on 23 Mar 2025
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted clever little truths, hidden in daily life.

Here are some examples to inspire your own showerthoughts:

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    • If your topic is in a grey area, please phrase it to emphasize the fascinating aspects, not the dramatic aspects. You can do this by avoiding overly politicized terms such as "capitalism" and "communism". If you must make comparisons, you can say something is different without saying something is better/worse.
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And I thought they were supposed to be shying away from fossil fuels.

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[–] rtxn@lemmy.world 66 points 3 months ago* (last edited 3 months ago) (52 children)

I know it's a joke, but many Tesla "solar" charging stations did actually use diesel generators a few years ago. Citation needed, but I can't be assed to look up the article.

[–] Honytawk@lemmy.zip 29 points 3 months ago (40 children)

Still more energy efficient than a regular ICE car.

[–] rtxn@lemmy.world 10 points 3 months ago* (last edited 3 months ago) (34 children)

Debatable, it depends on what fraction of the power was supplied by the generator. The chemical-kinetic-electric energy conversion incurs great losses because of waste heat, and portable diesel generators are not always built with efficiency in mind. A charging station operating on 100% diesel to power an EV is much less efficient than a modern ICE vehicle of a similar mass sans batteries.

[–] ascense@lemm.ee 7 points 3 months ago

Last I ran the numbers, it seemed like on paper charging off an industrial scale generator was around 20-30% more fuel efficient per km than directly running an ICE car, but I based it on the advertised efficiency values of a random average seeming diesel car, compared to rather pessimistic charging loss and efficiency numbers for the EV. The inefficiency of even modern ICE cars is quite astonishing, even compared to the engine in a generator that can constantly run at the optimal RPM and load for efficiency.

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