3 files changed, 23 insertions, 6 deletions
diff --git a/blog/content/notes/tech/gadgets/x12.gmi b/blog/content/notes/tech/gadgets/x12.gmi
index 05491f37..5aa911c2 100644
--- a/blog/content/notes/tech/gadgets/x12.gmi
+++ b/blog/content/notes/tech/gadgets/x12.gmi
@@ -4,14 +4,10 @@ This is the laptop I used for work from early 2024 to early 2026. The laptop is
 
 ## Linux compatibility
 
-Linux has several problems:
-
-* The keyboard is really a USB device (it is detachable), and you can only switch ctrl+fn using a Windows app or:
+The keyboard is really a USB device (it is detachable), and you can only switch ctrl+fn using a Windows app or:
 
 => https://github.com/manueljaeckle/thinkpad_x12_fn_switcher
 
-* Apparently, you cannot use the volume control keys in Linux either. However, I do not use those in Windows so I don't care.
-
 ## Form factor
 
 One of the main reasons for picking this laptop is that it's very light. The laptop with keyboard weighs 1.1kg.
diff --git a/blog/content/notes/tech/internet-basics.gmi b/blog/content/notes/tech/internet-basics.gmi
new file mode 100644
index 00000000..f83082c7
--- /dev/null
+++ b/blog/content/notes/tech/internet-basics.gmi
@@ -0,0 +1,19 @@
+# Internet basics
+
+## Everyone must have a domain name with portable email addresses
+
+One of the pilars of Internet services is email. Nearly all important services offered on the Internet depend on the user having an email address. The Internet has evolved so that email is largely dominated by very few large companies and most people have their personal email address locked to these companies.
+
+Previously, most Internet users used an email address provided by their Internet service provider (ISP). Because of the large number of independent ISPs worldwide, email was not controlled by few large companies. However, Internet users were locked to their ISP because of their personal email address.
+
+Every Internet service associated to a physical person must include a DNS domain name and a portable email service.
+
+When you get Internet service, including each individual data service included with individual mobile phone numbers, the buyer can choose a DNS domain name.
+
+The portable email service enables the owner of the service to define email addresses and set a delivery target. ISPs should make the entire domain easily portable when a user switches to a different ISP.
+
+The ISP must control use of the email addresses with the domain to prevent spam.
+
+Delivery targets decouple the email domain from the email service that stores the email. Users can choose to store email in whatever service they prefer, including an ISP service or other services.
+
+Email services must support transferring stored email.
diff --git a/blog/content/notes/tech/on-software-development.gmi b/blog/content/notes/tech/on-software-development.gmi
index 07743124..5c549f9e 100644
--- a/blog/content/notes/tech/on-software-development.gmi
+++ b/blog/content/notes/tech/on-software-development.gmi
@@ -56,7 +56,9 @@ Story points can be useful if planning poker helps developers address misunderst
 
 Story points are most useful the more detached from time they are. Associating story points with time puts useless pressure on developers that reduces their usefulness.
 
-In my experience, the number of value-delivering stories done per sprint is a good enough measure of progress. The amount of story points delivered per sprint does not have any value to stakeholders because story points are completely unrelated to value.
+Story points are not useful for stakeholders because story points are nearly completely unrelated to value.
+
+In my experience, the number of value-delivering stories done per sprint is a good enough measure of progress. Analyzing the total number of story points does not add much value in most cases, and might bias developers in their estimations and their prioritization without reason.
 
 ## Further reading