Reinertsen has borrowed more from queueing theory than from Deming. This is not unexpected -- Deming worked mainly with thin-tailed statistics, whereas Reinertsen applied his knowledge to the power laws that show up more in design and development work.
(The two approaches meet in the middle. Deming inspired lean manufacturing which also applies queueing theory. The latter has convenient results both for thin and thick tailed processes.)
The chief problem I have with Reinertsen (and it's not his fault, at all) is how difficult it is to get people to buy in to the idea that cost of delay exists, let alone buy in to measuring it.
I don’t understand how you can conclude that LLMs are a dead end: I’ve already seen so much useful software generated by LLMs, there’s no denying that they are a useful tool. They may not replace seniors developers, and they have their limitations, but it’s quite amazing what they already do achieve.
I also have seen lots of dogshit software created by Humans. And i have created useful software with LLMs. If you know how to manage the LLM, it can be very useful.
Prototype and the specs go hand in hand. Write a spec - prove you can implement it. Write an implementation - write a spec so we can talk about what is important (vs details of how you implemented it but someone else is allowed to implement differently) Often parts that are "obvious" are not implemented, or only the trivial version is implemented. You need to do both.
You're mixing up design and manufacturing. A skyscraper is first completely designed (on paper, cad systems, prototypes), before it is manufactured. In software engineering, coding is often more a design phase than a manufacturing phase.
Designers need malleability, that is why they all want digital design systems.
Yep! Manufacturing is the running of the software, either via testing or via deployment. That’s when you’ll find bugs or design defects. Operational errors (misconfigurations, under allocation of resources) are not related to the design of the software itself.
Splitting coding and design is a bad idea. It’s like asking engineers not to draw and measure.
You're proving the point? Sharepoint, teams: availability + price. Every company has microflows, sharepoint and teams are automatically available and part of the price or lower priced than the competition.
Even though tesla has only 2 models, i would still consider it for a new car, if not for Elon Musk. I have an Y, and it does everything i want it to do. Drives nicely, lots of (cargo) space, no friction charging when driving in Europe. Just plug it in a supercharger and it loads fast. No hassle with subscriptions and cards. Very reliable.
With the 3 and the Y they're already catering for a large part of the market demand, but a smaller model, and a stationwagon might help get it up to 80%+ of all demand.
TUV inspection failures are not a good indication of reliability. The lack of Tesla dealers and no need for yearly servicing means issues get caught at the inspection step for Tesla where for others they are caught at the pre-inspection step.
Also, you need a breakdown of the failures as wear and consumables (washer fluid low, splits in wipers, headlight alignment, mobile phone holder in wrong location) can be a failure but would not be a good indicator for lack of quality.
That is bad. One issue seems to be that brakes of electric cars can get issues over time as they are not used enough (because instead of true braking the regenerative recuperation is used).
Good though: If you are in an accident Teslas are the safest car one can buy
> The Tesla Model Y achieved the highest overall weighted score of any vehicle assessed by ANCAP in 2025, recording strong performance across all areas of occupant protection and active safety technology.
"Most of the issues involve critical components like brakes, lights, and suspension. Many cars fail because of play in the steering or faulty axles. These are problems rarely seen at the same level in competitors like Volkswagen or Hyundai."
I just received a consumer association (consumentenbond) test on car reliability and this time the Tesla Y is the most reliable EV in the overview. It scored 9.3 out of 10. The Toyota Aygo is the most reliable ICE with a score of 9.7. Looks like Tesla has massively improved their reliability.
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