• 16 Posts
  • 303 Comments
Joined 1 year ago
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Cake day: June 10th, 2023

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  • Oh sure. I agree with that. Obviously many people have limited options.

    I just think think it’s a monumentally bigger ask no matter where the change has to be made (policy or individual choice).

    Like our best solution for transportation (in the US at least) is to just keep making larger free ways. Even gas powered buses running on decades old technology could make a significant impact on the climate crisis, but people either don’t want to ride them or cities don’t want to build them.

    Any way, I’m just frustrated with the attitude that we’re going to technology our way out of this hole without needing to change or sacrifice anything (like we pulled off with ozone).

    When it comes to energy use, there’s such a thing induced demand. If it’s cheaper, people will use it more. Hell, look at how much energy it takes to use AI to write an email.

    There’s no induced demand with refrigerants.



  • Eh. The solution to the ozone layer was to replace refrigerant A with refrigerant B. A 1:1 swap that required very little effort from anybody.

    Getting off fossil fuels more or less mandates an entire global paradigm shift in how we do basically everything. The entire global economy of the past 200 years has been built off an unsustainable energy source.

    Sure, we can replace gas with batteries, but every step of the way is going to require small changes in how people do things, and they’re going to be very resistant to that.








  • The solar sail reflects light instead of absorbing it so you get to double dip on photon momentum.

    And sure, you can steer with the laser I suppose, but with that kind of super weak deltaV, you’re not going to be exactly doing donuts in the solar system.

    Even the massive solar sail only imparts a super small amount of force. It’s only useful because it does so for free over a long period of time with no air resistance.

    You’d be better off using a conventional thruster to do whatever steering you needed to do before letting the sail take over. It’s not like you need to steer around any obstacles.