diff --git a/pages/UpEnd.md b/pages/UpEnd.md
index 1c42763..8145cbe 100644
--- a/pages/UpEnd.md
+++ b/pages/UpEnd.md
@@ -92,6 +92,8 @@
 
 ❗ [Programátorova kritika chybějící struktury operačních systémů](https://blog.rfox.eu/cz/Programatorova_kritika_chybejici_struktury_operacnich_systemu.html) 
 
+❗ [There is only one OS, and it's been obsolete for decades](https://programmingmadecomplicated.wordpress.com/2017/08/12/there-is-only-one-os-and-its-been-obsolete-for-decades/)
+
 ## Highly adjacent projects!
 
 ### Datalog