JonC

Ship gets lighter as more fuel is destroyed. Ship gets heavier as it gets closer to light speed.

At 90% of light speed, the ship’s mass would be around 2.3x its rest mass.

I haven’t looked at your calculations in detail, but you seem to be missing that important point!

As already mentioned, the blue book by Evic Evans is a good reference, but it’s a ittle dry. Vaughn Vernon has a book, “Implementing Domain-Driven Design” that is a little easier to get into.

Personally, I found that I only really grokked it when I worked on a project that used event-sourcing a few years back. When you don’t have the crutch of just doing CRUD with a relational database, you’re forced to think about business workflows - and that’s really the key to properly understanding Domain-Driven Design.

I’ve always understood DRY to be about not duplicating concepts rather than not duplicating code.

In the example here, you have separate concepts that happen to use very similar code right now. It’s not repeating yourself as the concepts are not the same. The real key is understanding that, which to be fair, is mentioned in the article.

IMO, this is where techniques like Domain-Driven Design really shine as they put the business concepts at the forefront of things.

https://mitpress.mit.edu/9780262046305/introduction-to-algorithms/

This one is pretty hardcore. I bought the 2nd edition of it over 20 years ago when I started my career as a developer due to not doing a CS degree.

Also take a look at the Specification Pattern for something similar.

That’s something I would only use if the logic becomes very complex, but it can help break things down nicely in those cases.

Why the assumption that reactivity is only a front-end thing?

I’ve used it plenty on the back-end when dealing with streams of data that need to trigger other processing steps.

So I deleted the story before I posted it, and began to realize that even though I’m 40, and should be past all this, it still hurts, and I’m a deeply broken person.

The thing about trauma (and it likely is trauma) is that it often just doesn’t go away on its own and you need to do work on it. So, why should you be over it?

Should is a loaded word as it pretty much always comes from what you learned as a child. You should do that. You should be like this.

That “should” probably comes from your father when he told you how you should be as a child.

It sounds like you aren’t over it now, but that’s ok. It’s ok not to be over stuff that happened in childhood. But the important thing to understand is that you can get over it with work. Being aware of that is the first step on that road.

Guessing they’ve never gone more than 31 days without an accident or they would have needed a bigger sign

Apparently it’s because CrowdStrike installed their device driver as one that must start when Windows starts.

Explained here: https://youtu.be/wAzEJxOo1ts?feature=shared&t=675

I’ve linked to the specific time where he explains that issue, but tbh the whole video is worth watching.

Same, using Chat GPT 4. It explained the steps without prompting, which is different from the single line answer shown in the post too. I got this…

Let’s break this down step by step:

1. Sally has 3 brothers.
2. Each of those brothers has 2 sisters.

Sally is one of those sisters for each of her 3 brothers. Therefore, the second sister that each brother has would be the same other sister.

This means that Sally has only 1 other sister, making a total of 2 sisters in the family (including Sally herself).

So, Sally has 1 sister.

That one’s actually really easy to prove numerically.

Not going to type out a full proof here, but here’s an example.

Let’s look at a two digit number for simplicity. You can write any two digit number as 10*a+b, where a and b are the first and second digits respectively.

E.g. 72 is 10 * 7 + 2. And 10 is just 9+1, so in this case it becomes 72=(9 * 7)+7+2

We know 9 * 7 is divisible by 3 as it’s just 3 * 3 * 7. Then if the number we add on (7 and 2) also sum to a multiple of 3, then we know the entire number is a multiple of 3.

You can then extend that to larger numbers as 100 is 99+1 and 99 is divisible by 3, and so on.