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Joined 10 months ago
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Cake day: December 9th, 2023

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  • Censorship sucks and I can’t believe we let an entire country get away with it and still did business with them the whole time.

    It is not clear to me that the country would be less censored now and the people there better off if we had refused to do business with them.

    (Just to be clear, I am not saying that we handled China as well as we could have over the last few decades, but hindsight is 20-20.)




  • I think that sometimes what happens to people is that they build the life that they implicitly believe they are “supposed” to be living because that is what they see everyone else around them doing, rather than based on an honest self-assessment of whether this really is the what will make them happy. When they realize that this life is not actually making them very unhappy, they look for outside factors to blame because they did everything that they were “supposed” to be doing so it could not have been their own misinformed choices that led them to this point.

    And in fairness, no one chooses where they are born and the cultural conditioning that we receive, so this is not entirely their fault. It is really a societal problem that we do not encourage enough people to engage in true self-introspection to figure out for themselves what is important to them and what they want to get out of life so that they make these kinds of decisions with great deliberation and personal self-insight rather than taking the default option.










  • Something that definitely separates me from some of my less experienced coworkers is that, when I sit down and start to implement a plan I came up with in my head, if it turns out that things start exploding in complexity then I reevaluate my plan and see if I can find a simpler approach. By contrast, my less experienced coworkers buckle down and do whatever it takes to follow through on their plan, as if it has now become a test of their programming skills. This makes life not only more difficult for them but also for everyone who has to read their code later because their code is so hard to follow.

    I try to push back against this when I can, but I do not have the time and energy to be constantly fighting against this tendency so I have to pick my battles. Part of the problem is that often when the code comes to me in a merge request it is essentially too late because it would have to be essentially completely rewritten with a different design in order to make it simpler. Worse, the “less experienced” coworker is often someone who is both about a decade older than me and has also been on the project longer than me, so even though I technically at this point have seniority over them in the hierarchy I find it really awkward to actually exercise this power. In practice what has happened is that they have been confined to working on a corner of the project where they can still do a lot of good without others having to understand the code that they produce. It helps that, as critical as I am being of this coworker, they are a huge believer in testing, so I am actually very confident that the code they are producing has the correct behavior, even when I cannot follow the details of how it works that well.


  • The difference is that aether unraveled pretty quickly when we started seriously looking for it because experiments kept being outright inconsistent with what it was predicted we would see if it were there, whereas there are lots of independent lines of evidence that all point to the dark matter existing in the same page, so it really is not the same situation at all. The only problem with dark matter is that it doesn’t show up in our particle detectors (so far, at least), but there is no law of the universe that says that everything that exists has to.


  • It helps to realize that mass is just a bookkeeping label that we assign to the “internal” energy of a system, where the choice of what counts as being “internal” is somewhat arbitrary and depends on the level we are studying.

    For example, if you measure the mass of the nucleus of some atom, and then compare your measurement to the sums of the masses of the protons and neutrons inside of it, then you will see that the numbers do not agree. The reason for this is that much of the mass of a nucleus is actually the energy of the strong force bonds holding the nucleons together.

    But you can actually drop down another level. It turns out that the vast (~ 99%) majority of the mass in the proton in turn does not come from the quarks but from the energy of the gluon field holding them together.

    And if you drop down yet another level, the quarks get their mass through their interactions with the Highs field.

    So in short, it is energy all the way down.