Happy Wednesday folks! Last week has been somewhat busy! Work has been especially relentless. I’m still not out from under the snow, but onwards I march!

This week is mostly focused on Business, HaHa! Mostly about SIC codes in the UK.

As an aside, Buttondown’s unsplash image insert is nice to use, actually!

And also, why is the Divider in Buttondown not called a horizontal ruler? It is the <hr> html element, which is called a horizontal rule. I digress…

Onto the things I learned via AI:

SIC codes on companies house are for stats for HMRC, insurance classification, tender eligibility, and risk profiling

They don’t actually legally limit what the company can do. At least not from a Companies House point of view.

Oh, SIC codes are UK specific, they are Standard Industrial Classification codes.

SIC codes in the UK follow the ISIC and NACE

ISIC being the International Standard Industrial Classification of All Economic Activities, currently it’s in Revision 5, published by the United Nations.

NACE is the “statistical classification of economic activities” published by the European Commission. Fun fact, NACE comes from its French name: Nomenclature statistique des activités économiques dans la Communauté européenne.

You can visit the Eurostat offices in Luxembourg

Group of at least 10, need to book at least 8 weeks ahead, not in August, need to send an email: https://ec.europa.eu/eurostat/web/main/contact-us/visit-us.

Current SIC codes in the UK are the 2007 versions, the 2026 version is now ready

Although the ONS (Office of National Statistics) still has some work to do before Companies House adopts it.

If you want the list, you can find it on the ONS site.

The codes are changing though. 60202 → 62.20 (or 62.201 if you want to be more specific).

Dosbox-x can be compiled on a modern Mac OS Tahoe 26.4.1 system

In case you ever want heavy debugging where you want to pause program execution and dump the entirety of the memory into a bin file.

Claude can take DOS executables and a memory dump and completely disassemble a program

At some point it also offered me to write a full python 8086 interpreter.

Jupyter Notebook is kinda cool

It’s essentially a document where you have two kinds of blocks: markdown, and code.

Code can be whatever that Jupyter supports: python, bash, go, javascript, you name it. Then you can run the code in the code block as you’re viewing the document.

I’m giving a demo using a notebook, and running a bunch of bash scripts from within the document.

Hosted blogging platform for Jupyter Notebook doesn’t exist

I’m talking “like dev.to, but for notebooks.” It’s hard, mainly becuase someone has to pay for the compute which incurs when the article gets viewed, rather than written. That can get expensive should a post go viral.

Google Colab eats this cost. And might actually be the best and easiest way to share them.

Google AppSheet exists

From what I understand it’s an AI powered app generator that you get for free if you have a Business something subscription for Google Apps.

I’m going to try this out today / tomorrow and report back.

Have a look at AppSheet.

That’s everything for this week. Stay tuned for more shenanigans for the next one! As always, if you’ve enjoyed this, send this to a friend, get them to sign up, or maybe use the RSS link (view in browser → RSS link in the top right corner) to subscribe.

Okay, loveyoubai! ❤️