diff --git a/todo.txt b/todo.txt
index 4d88d5d..ef78284 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,4 +1,7 @@
 MENTION APPEND-ONLY IN UPLOAD EXAMPLE IN WRITING HLS
 
 also I wish there was a more explicit way this was enforced and would error at runtime.
-writablestream target?
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+writablestream target?
+
+Thoughts:
+So, a certain "lookahead" logic is definitely needed. The question is if this is a per-demuxer thing or a general thing instead. The demuxer could get in a "packet query" that specifies things like "I am interested in the next 20 seconds guaranteed", allowing the demuxer to pre-fetch more intelligently. The alternative would be some sort of demuxer-agnostic approach where there is a magical "packet requester" that has to be segment-aware. I'm actually not sure if that's good.
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