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diff --git a/roberth.jpeg b/roberth.jpeg
new file mode 100644
index 0000000..e0f40c2
Binary files /dev/null and b/roberth.jpeg differ
diff --git a/slides.md b/slides.md
index ae45bc4..bfa3444 100644
--- a/slides.md
+++ b/slides.md
@@ -18,26 +18,74 @@ _class: invert lead
 - Why
 - What
 - How
-- Demo
 
 Robert Hensing
 @roberth
 
 fediversity.eu
 
+# @roberth
+
+![bg left:30% 40%](roberth.jpeg)
+Robert Hensing
+
+- Hercules CI
+- Nix Steering Committee
+- Nix team
+- Module System / flake-parts / modular services / single package fixpoint
+- NixOps4
+
+# Fediversity.eu
+
+![bg left:50% 70%](ngi_fedi_full.svg)
+
+- NLNet
+- NORDUnet
+- Tweag
+- Open Internet Discourse Foundation
+
+# Fediversity.eu
+
+Quotes, emphasis mine:
+
+The Fediversity Project is a comprehensive effort to bring easy-to-use, ***hosted cloud services*** that have service portability and personal freedom at their core to everyone.
+
+
+The Fediversity Project enables easy hosting for a wide variety of fediverse platforms, all based on ***NixOS***.
+
+helps with decentralisation of the internet, a core principle of the NGI, by making it easier for people to participate in the Open Social Web ***on their own terms***.
+
+# NixOps4
+
+- Deployment tool
+- WIP
+- Successor to NixOps
 
 # Why
 
+<!-- 
+What is the problem NixOps solves?
+-->
+
 2013 - 2020
 
 - NixOps 1 is a tool to deploy NixOS systems
 - Provisioning, secrets
 - Also resources, e.g. AWS Route53
-- Call Nix evaluator twice (bad(TM))
 
-<!--
-  calling the evaluator twice is not good enough
--->
+# Why
+
+<!-- Also _has_ problems
+
+Testing and CI are underdeveloped
+
+Python is probably a fine language, but it did turn away contributors, and the way the code base was set up made it hard
+
+Calling the evaluator twice is both too often and too little, leading to bad workarounds.
+  -->
+- Testing and CI
+- Python (*)
+- Call Nix evaluator in batch, twice (bad)
 
 
 # Why
@@ -68,7 +116,7 @@ They did a good job with the architecture they had.
 
 # Why
 
-2022
+2021
 
 @roberth
 
@@ -117,9 +165,7 @@ NixOps4
 
 <!--
 
-How done is it?
-
-Adds new layer on top
+Adds new layer on top, analogous to Nix
 
 Focus on `nix value` => precisely that; no tight coupling between NixOps and its resources
 
@@ -165,7 +211,7 @@ Collection of resources
 
 - Program built with Nix
 - Called by NixOps
-- Talks an IPC protocol
+- JSON over stdio
 
 
 # Expressions
@@ -188,6 +234,7 @@ Simplified
 
 <!-- These are very abstract. Clarify why. -->
 
+<!-- Next: zoom in on the function -->
 
 # Expressions
 
@@ -308,15 +355,23 @@ Integrate arbitrary scripts, no glue code
 
 # Operator benefits
 
-# Caveats
+# Progress
+
+Built, but subject to fixes and improvements
+- `nixops4`/`nixops4-eval` process architecture
+- Nix C API, Rust bindings
+- Documentation tooling
+- Testing
+
+# Progress
 
 TBD
 - `mkSequence` nesting / data dependencies
 - Read, Update, Delete
-- More resources
-  - OpenTofu
+- State management
+- More resources, OpenTofu
 
-# Demo?
+# Questions
 
 # Not discussed