diff --git a/extra/new-slots/authors.txt b/extra/new-slots/authors.txt
deleted file mode 100755
index 1901f27a24..0000000000
--- a/extra/new-slots/authors.txt
+++ /dev/null
@@ -1 +0,0 @@
-Slava Pestov
diff --git a/extra/new-slots/new-slots.factor b/extra/new-slots/new-slots.factor
deleted file mode 100755
index 9773da7b41..0000000000
--- a/extra/new-slots/new-slots.factor
+++ /dev/null
@@ -1,67 +0,0 @@
-! Copyright (C) 2008 Slava Pestov.
-! See http://factorcode.org/license.txt for BSD license.
-USING: effects words kernel sequences slots slots.private
-assocs parser mirrors namespaces math vocabs tuples ;
-IN: new-slots
-
-: create-accessor ( name effect -- word )
-    >r "accessors" create dup r>
-    "declared-effect" set-word-prop ;
-
-: reader-effect T{ effect f { "object" } { "value" } } ; inline
-
-: reader-word ( name -- word )
-    ">>" append reader-effect create-accessor ;
-
-: define-reader ( class slot name -- )
-    reader-word [ slot ] define-slot-word ;
-
-: writer-effect T{ effect f { "value" "object" } { } } ; inline
-
-: writer-word ( name -- word )
-    "(>>" swap ")" 3append writer-effect create-accessor ;
-
-: define-writer ( class slot name -- )
-    writer-word [ set-slot ] define-slot-word ;
-
-: setter-effect T{ effect f { "object" "value" } { "value" } } ; inline
-
-: setter-word ( name -- word )
-    ">>" prepend setter-effect create-accessor ;
-
-: define-setter ( name -- )
-    dup setter-word dup deferred? [
-        [ \ over , swap writer-word , ] [ ] make define-inline
-    ] [ 2drop ] if ;
-
-: changer-effect T{ effect f { "object" "quot" } { "object" } } ; inline
-
-: changer-word ( name -- word )
-    "change-" prepend changer-effect create-accessor ;
-
-: define-changer ( name -- )
-    dup changer-word dup deferred? [
-        [
-            [ over >r >r ] %
-            over reader-word ,
-            [ r> call r> swap ] %
-            swap setter-word ,
-        ] [ ] make define-inline
-    ] [ 2drop ] if ;
-
-: define-new-slot ( class slot name -- )
-    dup define-changer
-    dup define-setter
-    3dup define-reader
-    define-writer ;
-
-: define-new-slots ( tuple-class -- )
-    [ "slot-names" word-prop <enum> >alist ] keep
-    [ swap first2 >r 4 + r> define-new-slot ] curry each ;
-
-: TUPLE:
-    CREATE-CLASS
-    dup ";" parse-tokens define-tuple-class
-    define-new-slots ; parsing
-
-"accessors" create-vocab drop