diff --git a/README.md b/README.md
index 7499ae3..c6ebf80 100644
--- a/README.md
+++ b/README.md
@@ -33,5 +33,17 @@ What algorithms are we planning to have,
 - edge detection?
 - SDFs?
 - animation/bones?
+- spatial audio?
 
 ## are we gon use ogl or start from scratch?
+
+## we need to decide architecture
+- ECS?
+- babylon-like
+- threejs-like
+
+- message passing?
+- observables?
+- events?
+- runnable on a server?
+- worker/main thread adaptable? or just worker?
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