diff --git a/interaction.md b/interaction.md
new file mode 100644
index 000000000..83c370abd
--- /dev/null
+++ b/interaction.md
@@ -0,0 +1,4 @@
+# interaction
+
+https://twitter.com/flancian/status/1373698155003412488
+
diff --git a/journal/2021-03-21.md b/journal/2021-03-21.md
index 01f0a6eca..9cc0aed0c 100644
--- a/journal/2021-03-21.md
+++ b/journal/2021-03-21.md
@@ -17,6 +17,7 @@
 - [[flourish]]
 - [[rfc]]
 - [[mangled in transit]]
+- [[interaction]]
 - [[tree style tab]]
 - [[joshua]]
 - [[c2]]