diff --git a/.gitignore b/.gitignore
index 088982a23..9a2584d6f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 *.pyc
 todo.md
 .coverage
-site/
\ No newline at end of file
+site/
+.coverage.*
diff --git a/design.md b/design.md
deleted file mode 100644
index d343e4074..000000000
--- a/design.md
+++ /dev/null
@@ -1,31 +0,0 @@
-# Design
-
-Let's do this differently.
-
-Here's what I'd like to get to:
-
-import narwhals as nw
-from narwhals.translate import (
-    translate_frame,
-    translate_series,
-    to_native,
-)
-
-dfpd = ...
-df = nw.DataFrame(df_any)
-
-df = df.with_columns(c = nw.col('a') + nw.col('b'))
-
-result = to_native(df)
-
----
-
-we need to just have a single class. can't have all this nonsense...
-
-then, we don't even need a spec...
-
-we can still define entrypoints though?
-
----
-
-where should extract native happen?