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Cake day: June 1st, 2023

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  • The case for an H2 economy is one entirely based on Green H2 made from surplus renewables which are needed most days to have enough renewable energy every day.

    Wouldn’t it be more compelling to store it in other types of batteries instead of H2 primarily?

    That gas companies know how to build pipelines, distribution, and make metered gas sales to customers is a path for them/employees to remain useful without destroying the planet.

    I honestly don’t think H2 is a good idea for these use-cases. H2 distribution is a different beast than natural gas distribution, on top of gas combustion just generally not being particularly good compared to common household electrical counterparts (induction for stoves, electric for ovens, heat pumps for heating buildings and water).

    Commercial vehicles has legitimate benefits of lower cost from H2 FCs than batteries. Quicker refuel times. Aviation especially benefits from redesigning planes for H2 for the weight savings. Trains/ships need the power/range. Trucks/cars can use the range extension, and could use H2 as removable auxiliary power for extended range.

    I imagine refueling times is not necessarily going to be critical for all types of commercial use-cases.

    Aviation struggles with the relatively low energy density in H2.

    Trains should essentially always be running on catenaries.

    Boats might be able to make use of H2, I’m not super familiar with the issues affecting them.

    Long-hail trucking should broadly be replaced by the much more efficient rail shipping.

    Cars run pretty much fine on electric as is, I’m not sure the case for making H2 cars is compelling enough to be warranted.

    Ammonia and fertilizer is traditional use for H2.

    This might be a good niche for H2 to fill.

    All in all, I’m still not convinced that large-scale H2 buildouts is a good use of our resources, but there are definitely a few compelling niches that it can fill. We need to be wary of them being co-opted by blue hydrogen fossil fuel companies though, which often seems to be the case today.








  • I don’t think you necessarily need to have studied a lot of math to be successful in programming, but you will need it if you want to get a CS degree, which in turn can be a good lever to a fruitful programming career.

    My advice when it comes to math - math skills build upon the concepts you’re expected to have learned before, meaning that if you didn’t fully get everything in the past, then your foundation is not in great shape and you will struggle at higher levels. Going back and repeating the fundamentals just so that you fully understand everything is very helpful in my experience.

    I also think that understanding math is rewarding in itself, for what it’s worth!





  • The developers get less, but it ends up costing more to employ people in the EU. In the US, the rule of thumb - for white collar, non-executive jobs, at least - is 1.4x the salary for TCE (and it’s often reasonable to round up to 1.5). For EU employees, it’s between 1.5 and up to 1.8. Norway is 1.7; I don’t know what Sweden is, but I’d assumed it’s around the same.

    So I get where you’re coming from, but this is really not true, and I’ll provide you with some numbers as to why it is not true.

    Let’s check out the median salaries for senior engineers in Stockholm using levels.fyi: https://www.levels.fyi/t/software-engineer/levels/senior/locations/greater-stockholm

    As levels.fyi automatically converts to local currency, this is specified as 800k SEK, or 76k USD in today’s currency exchange. We can multiply that by the factor you provided for Norway, giving us 137k USD.

    Now let’s plug in the numbers for San Francisco: https://www.levels.fyi/t/software-engineer/levels/senior/locations/san-francisco-bay-area

    3.375m SEK, or 321k USD. Using your factor for the U.S, we get 448k USD.

    The contrast is of course the largest for San Francisco which is the most high-paying area for engineers, but the thought experiment is basically replicable for any city with a tech scene in the U.S, which is most comparable to Stockholm, which is the most expensive city in Sweden and which has a tech scene.

    Essentially the TCE cannot explain the discrepancy in salaries in tech between Europe and the U.S.

    Before we inevitably go there, COL does not adequately explain it either - San Francisco is very expensive, but Stockholm is far from being a cheap place to live either. Even when adjusting for this factor, the total amount left after living expenses is quite significantly higher for someone on a U.S salary.

    It’s basically a fool’s errand to try to logically explain this discrepancy. The honest answer is that capitalism follows no strict logic, and pay becomes whatever the people with the money can get away with. They just happen to be able to get away with far less in Europe.