diff --git a/.obsidian/plugins/recent-files-obsidian/data.json b/.obsidian/plugins/recent-files-obsidian/data.json
index 800abf7..19d6e2e 100644
--- a/.obsidian/plugins/recent-files-obsidian/data.json
+++ b/.obsidian/plugins/recent-files-obsidian/data.json
@@ -1,5 +1,17 @@
 {
   "recentFiles": [
+    {
+      "basename": "full-takeoff",
+      "path": "full-takeoff.md"
+    },
+    {
+      "basename": "README",
+      "path": "README.md"
+    },
+    {
+      "basename": "realism-vs-instrumentalism",
+      "path": "realism-vs-instrumentalism.md"
+    },
     {
       "basename": "automating-pdf-annotation",
       "path": "automating-pdf-annotation.md"
@@ -28,14 +40,6 @@
       "basename": "feeders",
       "path": "feeders.md"
     },
-    {
-      "basename": "full-takeoff",
-      "path": "full-takeoff.md"
-    },
-    {
-      "basename": "README",
-      "path": "README.md"
-    },
     {
       "basename": "pre-takeoff-confirmation",
       "path": "pre-takeoff-confirmation.md"
@@ -195,10 +199,6 @@
     {
       "basename": "gold-plating",
       "path": "gold-plating.md"
-    },
-    {
-      "basename": "systems",
-      "path": "systems.md"
     }
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diff --git a/realism-vs-instrumentalism.md b/realism-vs-instrumentalism.md
new file mode 100644
index 0000000..c1aa040
--- /dev/null
+++ b/realism-vs-instrumentalism.md
@@ -0,0 +1,20 @@
+---
+tags:
+  - status/fleeting
+---
+# Realism vs. Instrumentalism
+
+Realism holds that the purpose of ~~science~~
+is to describe the world as accurately as possible.
+Instrumentalism (anti-realism) holds that the purpose
+is to make accurate predictions.
+
+> [!quote] George E. P. Box, British statistician
+> All models are wrong, but some are useful.
+
+> [!quote] _Did Copernicus steal ideas from Islamic astronomers?_, Opinionated History of Mathematics (pp.)
+> Ptolemy's lunar model is "flawed"
+> in that it inaccurately describes Luna's distance from Earth,
+> however Ptolemy only ever uses the model to predict eclipses,
+> which the model does very well.
+> The discrepancy is only a flaw from a realist perspective.