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Joined 1 year ago
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Cake day: July 28th, 2023

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  • It’s more like BEV reality. They (car manufacturers, oil & gas, etc) have been trying to get hydrogen to work for ages now, but BEVs have made much more progress instead.

    Hydrogen fuel-cells: Everyone (consumers, manufacturers, etc) has been waiting for this to come into mass-production and used in cars. Hasn’t happened yet.

    Hydrogen combustion engines: Good idea, but still not as feasible at sounds. I’ve heard of problems with efficiency of the engines, dangers in storing and transporting the fuel, leakage, etc. It still hasn’t happened to scale.

    Hydrogen production is still very energy and CO2 intensive. The small amount of hydrogen that can be produced using green methods or with carbon-capture, should be used towards planes and rockets.

    BEVs won’t be a cure all for every machine on earth, and not immediately either. But over time, it should become the most cost-appropriate solution if you factor in the cost of emitting CO2 and other GhGs.



  • Oh no. No social media site should ever claim that a post, story, or image is legit.

    For some viral pics/posts, it should probably show a warning that the image doesn’t have any signatures, no valid signatures, or a revoked signature. Otherwise, it probably just shows a verified signature chain, for example: BleedingHeartInfluencer*[edited]* → NyTimes*[edited]* → AP*[story]* → AhmedMohammed*[photographer,2023-12-03]*.

    We can always assume nation states and other powerful people will know how to fake images, GPS, reality, etc. We can also always assume fakes will still be shared by many people without any proper authentication.

    The main goal here would just be to reduce proliferation.





  • Well, not necessarily. How about just embedding the following in the EXIF tag: digital signatures from the original camera; digital hashes of the original image; digital sigs for the publisher and the article where the pics will appear.

    Any additional processing by a “social media content creator” - for example, adding captions to make a meme out of it - will also include the prior chain of digital sigs and hashes.

    Now when it pops up on social media sites/apps, there can be little info bubbles that link to the original pic or article, or provide info on ownership of the camera along with date and timestamps of the pics.

    Garbage will always exist on social media, but at least we can have these little tools to verify authentic images.


  • Hydrogen is a dead end, because it is nowhere near green to produce it in large quantities, and the technology is still not ready, nor is the supply network. It’s just an idea pushed by fossil fuel companies hoping to transition to selling hydrogen.

    E-fuels are not zero emission, but the basic premise is that somewhere else along the chain it reduced GhG emissions into the atmosphere - like capturing methane from cow burps, or biogas from garbage dumps.

    These fuels will have uses - hydrogen in rockets and e-fuels for aircraft - but for almost all land vehicles, BEVs or going electric, is the most readily available and working strategy.