diff --git a/todo.yaml b/todo.yaml
index e1c92a2..f502d2a 100755
--- a/todo.yaml
+++ b/todo.yaml
@@ -1,4 +1,6 @@
 todo:
+- html has a predictive line that has first .66 weight 1, next .16 weight 2, rest
+  weight 4; inverse of span and cares more about recent; when ?predict
 - html has stacked bar chart version
 - html version has fields and submit button rather than query params by hand
 - html version can accept new transactions for moolah