diff --git a/basis/math/ranges/ranges-tests.factor b/basis/math/ranges/ranges-tests.factor
index aedd2f7933..e314f72c6b 100644
--- a/basis/math/ranges/ranges-tests.factor
+++ b/basis/math/ranges/ranges-tests.factor
@@ -22,17 +22,6 @@ IN: math.ranges.tests
 [ { 0 1/3 2/3 1 } ] [ 0 1 1/3 <range> >array ] unit-test
 [ { 0 1/3 2/3 1 } ] [ 1 0 -1/3 <range> >array reverse ] unit-test
 
-[ t ] [ 5 [0,b] range-increasing? ] unit-test
-[ f ] [ 5 [0,b] range-decreasing? ] unit-test
-[ f ] [ -5 [0,b] range-increasing? ] unit-test
-[ t ] [ -5 [0,b] range-decreasing? ] unit-test
-[ 0 ] [ 5 [0,b] range-min ] unit-test
-[ 5 ] [ 5 [0,b] range-max ] unit-test
-[ 3 ] [ 3 5 [0,b] clamp-to-range ] unit-test
-[ 0 ] [ -1 5 [0,b] clamp-to-range ] unit-test
-[ 5 ] [ 6 5 [0,b] clamp-to-range ] unit-test
-[ { 0 1 2 3 4 } ] [ 5 sequence-index-range >array ] unit-test
-
 [ 100 ] [
     1 100 [a,b] [ 2^ [1,b] ] map prune length
-] unit-test
\ No newline at end of file
+] unit-test
diff --git a/basis/math/ranges/ranges.factor b/basis/math/ranges/ranges.factor
index 5b4bdae1e6..d28afa1413 100644
--- a/basis/math/ranges/ranges.factor
+++ b/basis/math/ranges/ranges.factor
@@ -49,24 +49,3 @@ PRIVATE>
 : [1,b] ( b -- range ) 1 swap [a,b] ; inline
 
 : [0,b) ( b -- range ) 0 swap [a,b) ; inline
-
-: range-increasing? ( range -- ? )
-    step>> 0 > ;
-
-: range-decreasing? ( range -- ? )
-    step>> 0 < ;
-
-: first-or-last ( seq head? -- elt )
-    [ first ] [ last ] if ;
-
-: range-min ( range -- min )
-    dup range-increasing? first-or-last ;
-
-: range-max ( range -- max )
-    dup range-decreasing? first-or-last ;
-
-: clamp-to-range ( n range -- n )
-    [ range-min ] [ range-max ] bi clamp ;
-
-: sequence-index-range  ( seq -- range )
-    length [0,b) ;
diff --git a/extra/jamshred/player/player.factor b/extra/jamshred/player/player.factor
index 5b92b3a434..3364179920 100644
--- a/extra/jamshred/player/player.factor
+++ b/extra/jamshred/player/player.factor
@@ -45,10 +45,10 @@ CONSTANT: max-speed 30.0
     max-speed [0,b] ;
 
 : change-player-speed ( inc player -- )
-    [ + speed-range clamp-to-range ] change-speed drop ;
+    [ + 0 max-speed clamp ] change-speed drop ;
 
 : multiply-player-speed ( n player -- )
-    [ * speed-range clamp-to-range ] change-speed drop ; 
+    [ * 0 max-speed clamp ] change-speed drop ; 
 
 : distance-to-move ( seconds-passed player -- distance )
     speed>> * ;
diff --git a/extra/jamshred/tunnel/tunnel.factor b/extra/jamshred/tunnel/tunnel.factor
index 59120cc578..986574ee91 100644
--- a/extra/jamshred/tunnel/tunnel.factor
+++ b/extra/jamshred/tunnel/tunnel.factor
@@ -1,6 +1,9 @@
 ! Copyright (C) 2007, 2008 Alex Chapman
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays colors combinators kernel literals locals math math.constants math.matrices math.order math.ranges math.vectors math.quadratic random sequences specialized-arrays.float vectors jamshred.oint ;
+USING: accessors arrays colors combinators fry jamshred.oint
+kernel literals locals math math.constants math.matrices
+math.order math.quadratic math.ranges math.vectors random
+sequences specialized-arrays.float vectors ;
 FROM: jamshred.oint => distance ;
 IN: jamshred.tunnel
 
@@ -12,6 +15,9 @@ C: <segment> segment
 : segment-number++ ( segment -- )
     [ number>> 1+ ] keep (>>number) ;
 
+: clamp-length ( n seq -- n' )
+    0 swap length clamp ;
+
 : random-color ( -- color )
     { 100 100 100 } [ random 100 / >float ] map first3 1.0 <rgba> ;
 
@@ -53,7 +59,7 @@ CONSTANT: default-segment-radius 1
 : sub-tunnel ( from to segments -- segments )
     #! return segments between from and to, after clamping from and to to
     #! valid values
-    [ sequence-index-range [ clamp-to-range ] curry bi@ ] keep <slice> ;
+    [ '[ _ clamp-length ] bi@ ] keep <slice> ;
 
 : nearer-segment ( segment segment oint -- segment )
     #! return whichever of the two segments is nearer to the oint
@@ -82,7 +88,7 @@ CONSTANT: default-segment-radius 1
     ] dip nearer-segment ;
 
 : get-segment ( segments n -- segment )
-    over sequence-index-range clamp-to-range swap nth ;
+    over clamp-length swap nth ;
 
 : next-segment ( segments current-segment -- segment )
     number>> 1+ get-segment ;