Obviously not discounting what a huge blow this is (and right when I was planning to explore Arduino more), but practically speaking, what can we do to help?

I use illustrations for a lot of other things though. I use them to pace my posts, to call out things that are especially important, to reinforce written ideas with images, and to give the reader's eye a place to rest.

If you are looking for graphs, this video about the dot product from 3B1B may be more your speed: https://www.youtube.com/watch?v=LyGKycYT2v0

I teach math by leading with examples. I try to show the intuition behind an idea, and why it is interesting. For this series, my reader is someone who knows algebra, and likes learning new things, especially when a teacher shows what is interesting about a topic.

## You didn't cover x about the dot product.

I try to only teach as much as is necessary to get the student to the next point, which is matrix multiplication. I usually end up cutting a lot of material out of my chapters to keep them simple. In this case, I cut out a whole section on the properties of a dot product, as well as a discussion about inner and outer products, because those weren't necessary to get to matrix multiplication. I think this context was lost while posting to HN.

## 3B1B already has a series on this.

I love 3B1B, but his style of teaching and mine are quite different. Even though we both teach visually, his videos are densely packed with information and his expectation is that you will watch the video a few times till you understand the topic. He also leads with math more than I do. My posts are written more like stories. My goal is they should be easy to get into, and by the time you have finished reading, you should understand more about the topic. I don't expect readers to read through multiple times. I personally learned linear algebra through Strang's videos and textbook, and those videos are awesome, but can be confusing. If you found the Strang or 3b1b videos confusing, hopefully my posts will make it easier for you to follow them. I think comment is spot on: https://news.ycombinator.com/item?id=45800657

If these ideas resonate with you, I think you'll like this post, and if not, there are plenty of guides that go the more traditional route. You can also read the first post in the series and see if you like it: https://www.ducktyped.org/p/an-illustrated-introduction-to-l...

For another example of my writing, see my series on AWS: https://www.ducktyped.org/p/a-mini-book-on-aws-networking-in...

This the only way to teach to humans.

Any time linear algebra comes up, I make it a point to drop Pavel's videos: https://www.youtube.com/playlist?list=PLlXfTHzgMRUKXD88IdzS1....

Preemptively noting: this is also Strang's strategy.

And as others are saying, plenty of people can't afford to work for no pay indefinitely.

I'm not a Federal employee and I don't know the details, but there's a banner on my bank's (Chase) website (after you log in) suggesting that they have mechanisms to assist those who aren't getting paid.

What those are, I have no idea. It may well be high interest loans or no interest loans. Or it may waive fees on overdrafts. Again, I don't know. But banks are taking note and communicating with their customers about it.

These banks do not exist.

> But in recent years

Just to expand on this a bit: I have been teaching this way since at least 2016, when I published a book on algorithms called Grokking Algorithms. It is an illustrated guide to algorithms. If you didn't like this post, I imagine you won't like the book either :)

Here is an interview I did with Corey Quinn where I talk more about my teaching philosophy: https://www.youtube.com/watch?v=lZFvTTgR-V4