diff --git a/journal/2020-12-04--15-30-41Z--crux_past_present_and_future.org b/journal/2020-12-04--15-30-41Z--crux_past_present_and_future.org
index 8256d374..b71f5c1c 100644
--- a/journal/2020-12-04--15-30-41Z--crux_past_present_and_future.org
+++ b/journal/2020-12-04--15-30-41Z--crux_past_present_and_future.org
@@ -4,3 +4,6 @@
 
 tags :: [[file:../../../../../../.org/journal/2020-05-26--06-16-14Z--clojure.org][clojure]] [[file:../../../../../../.org/journal/2020-12-04--15-33-28Z--re_clojure_2020.org][re:clojure 2020]]
 source ::
+
+- =seek= find the first event after a date. Index by date.
+- trick to reverse the timeline to lookup in reverse.