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Cake day: July 3rd, 2023

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  • electric cars release more CO2e than fossil-fuel cars

    India’s grid was about 37% renewable in 2020. I’m seeing estimates of 46% renewable as of now, but those aren’t official. So that conclusion is very unlikely. What is possible is that EV subsidies might be encouraging people to buy electric cars instead of petrol bikes, which could increase emissions.

    If this is true, would it also be true for coal-to-electricity trains vs more straight fossil-fueled trains?

    No, because diesel locomotives are actually diesel-electric - the diesel power is used to generate electricity, which then turns the wheels. So electric locos are simply replacing the very heavy, noisy and dirty diesel engine with a stationary power plant that can be located somewhere remote, much more efficient and does not need to be dragged along with the train. (They are also faster and more powerful, which is probably the bigger reason for electrification.)










  • airborne viruses that can travel for hundreds, perhaps even thousands of miles

    Airborne viruses usually travel about two metres (hence the two metre social distancing rules for Covid-19). Even if a single virus somehow travels farther - perhaps by hitching a ride on a vehicle - it is unlikely to cause a successful infection, because you need enough of them (‘viral load’) to overwhelm host defences.

    I don’t know what ‘diluted toxins’ has to do with viruses and immunology since toxins are a rather different matter entirely

    Vaccines work in different ways. The oldest method is what you described - attenuated viruses. Newer ones usually do not contain active viruses. They either have inactivated viruses, or, increasingly, just the viral proteins or mRNA. This reduces the risk of the vaccine causing harm to the recipient.

    the immune system can ‘learn’ and ‘evolve’ over the course of a single human’s lifetime

    If the person survives, their immune system may learn to identify and defend against that virus. Or it might just forget. Or it might cause random damage due to cytokine storms. Or it might forget all previous information. And in any case, some percentage of the population will die.

    Thinking that infections are good because they will help increase immunity is like thinking that a country constantly being at war is good because then they’ll always be ready for war. Particularly when you can give the same immunity at a fraction of the risk using vaccines that just have some proteins or mRNA.