diff --git a/journal/2021-02-17.md b/journal/2021-02-17.md
index 451eb90b3..43aada7fb 100644
--- a/journal/2021-02-17.md
+++ b/journal/2021-02-17.md
@@ -6,6 +6,7 @@
 - [[tectonic shift]]
 - read [[how tech loses out]] -- partly about [[outsourcing]]
   - made me think of [[bullshit jobs]]
+- learnt about [[waterfall chart]]
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [quad9]: ../quad9 "Quad9"
diff --git a/waterfall-chart.md b/waterfall-chart.md
new file mode 100644
index 000000000..a16bc0b87
--- /dev/null
+++ b/waterfall-chart.md
@@ -0,0 +1,8 @@
+# Waterfall Chart
+
+- [[go]] https://en.wikipedia.org/wiki/Waterfall_chart
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[go]: go "Go"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/waterfall-charts.md b/waterfall-charts.md
new file mode 100644
index 000000000..f61beebec
--- /dev/null
+++ b/waterfall-charts.md
@@ -0,0 +1,2 @@
+# Waterfall Charts
+