For a while now, I'd been watching one stock's order book every day. It was SpaceX (SPCX), which listed on June 12. The IPO price was $135, and net proceeds…

I sometimes get asked, "Do you have RoHS certification?" Every time, I answer, "There's no such thing as RoHS certification." Most of the time, the air fills…

This long-running series has reached its final installment. Up to this point I've written about "where AI works and where it doesn't," following the process of…

The other day, a development partner asked me, "Just do these three things." npm, pip, bundler. It was a setting to switch each package retrieval to go through…

Last time I covered the release work on KDP. There I mentioned in passing that "AI helped with the cover," but this cover wasn't something I could leave at…

Last time I ended on a harsh note: "editing in Japanese was, in the end, just a bit easier." This time, the pendulum swings properly back. In the practical…

This is an honest installment. Up until last time I wrote confidently about "turning AI into a team to produce a full-length work," but once I entered the…

For a while now, I'd had a nagging sense that explanations of LLMs just don't land with students. Lining up terms like "large language model," "Transformer,"…

In the first post of this series I wrote about the concept and the outline. This time, I want to talk about how this novel actually got made — a process in…

This story may not be familiar to those who have never been involved in a product release, but it comes up often in the industry. Products differ so much in…

Amine-based solvents are widely used in current practical-level CCS (Carbon Capture and Storage) plants, and personally I had accepted this without any…

I don't need to describe requirement specification templates myself, since various organizations and volunteers already provide all kinds of them. Using…

【Objection ①】 You should write a proper spec as early as possible. If you don't clearly define what you're building and why, right from the start, decisions…

This is a question I occasionally get, and the people who ask it are almost always people who don't build prototypes themselves. That's because the people who…

Actually, this is a strange question. PoC (Proof of Concept) is sometimes described as "proving a hypothesis," but I think it's a term most often used to…

Let's start by considering why development reviews don't get adopted. 1. They're a hassle, including schedule coordination 2. There's no suitable person to act…

Project managers (PMs) often draw Gantt charts. This is a chart where each task and its owner are listed in a row, and a bar extending horizontally shows where…

If I had to narrow it down to just one thing, it would be crisis management ability. The ability to detect potential crises, properly assess their probability…

I have worked at both companies with in-house fabs and fabless companies. In most cases startups drift toward fabless. That's because owning a factory carries…

Instinct, gut feeling, and boldness. That's what I'd like to say, but let me put down a somewhat more logical account as well. There is generally no technical…

It's rare for someone to ask that so directly to your face, though it does happen, but I sense strongly that this question is sitting in the back of many…

There are various opinions, at various levels, about the mechanics behind the cheapness of Chinese manufacturing, so what I present below is only the extent of…

It's true. Molds are the single biggest risk factor in manufacturing, squeezing both schedules and wallets. For example, making even a simple box, something as…

This is a very common question in consultations, and there really doesn't seem to be much good material out there that systematically explains the overall…

When releasing a product, one thing you always have to decide is the price. There's a rough rule of thumb often repeated: "You'll be fine if you set the price…

Contrary to what the name suggests, an instruction manual doesn't just need to explain how to use the product. I'll explain that point here. <The manual is…

Legal matters carry extremely high risk when things go wrong. So you absolutely need expert advice. That said, startups that have just launched mostly don't…

I once wrote a blog post on the topic "Which is more advantageous, software or hardware?" I'll skip the details of the argument, but here's the conclusion:…

Development never goes smoothly. Specs change mid-development, deadlines close in with no resolution in sight, tooling has to be remade, patent licensing…

The move away from plastic is fundamentally a story about alternative materials. Polymers aren't my specialty, so honestly it's a domain I don't fully…

DACC (Direct Air Carbon Capture) is an area getting huge attention, and the IPCC's Sixth Assessment Report states explicitly that it is "not an option —…

I once talked with someone from an advertising agency about an app and got the comment: "iOS-only is unthinkable, right off the bat. No way." For developers,…

In practice, this is a case-by-case matter. Let's consider a few typical examples. ＜The case of Company A＞ Company A is a startup that has just launched, and…

Common Pitfalls in Risky Development Honestly, situations like this are a common pitfall in development. Everyone runs into it, and everyone feels the pain of…

I think this is really true, from experience. That said, the distribution has a distinctive shape worth noting. Suppose, for example, that the variation in…

Whether you call it "winning" or "losing" depends on definition, but becoming like China again is, I think, simply no longer possible. The reason is the…

I'm writing an answer to a question I often get asked at the end of talks. Readers who follow my blog already know how many difficulties await when you build…

I pulled the note account I'd been using for about a year and moved back to my own company blog. Here are the reasons why. Did traffic increase? The only real…

The following text was written for a certain occasion, but since it contains content of high public value, I decided to pull it out and publish it separately.…

The Information Processing Society of Japan ran a feature on this topic in their bulletin recently, and around the same time I had some back-and-forth with a…

Zoom, which everyone here uses. I keep hearing "isn't there a bunch of security problems being said about it!?" and getting asked about it too. So I'm writing…

Getting a patent is a kind of "given" For people building business strategy and people launching startups, one of the things most of them worry about is…

I implemented UART communication between M5Stack and M5Stack. That works with really simple codes. This is sending something over UART. Gist This is receiving…

Show this code just posting something to Slack channel by pushing the button on M5Stack In loop() section, I'm using some magic numbers in order to clean up…

This post is a back number of a previous entry It was a while ago now, but the topic in the headline gave me the answer I'd been looking for. Thank you,…

There was an interesting episode when he talked about the project to generate wind power by flying kites. Ordinary wind power requires too much equipment and…