diff --git a/src/predicates.clj b/src/predicates.clj
index abb431d..37400c2 100644
--- a/src/predicates.clj
+++ b/src/predicates.clj
@@ -9,27 +9,27 @@
                      {:name "Solanin"}
                      {:name "Monster 3" :series "Monster"}])
 
-(def china {:name "China Miéville", :birth-year 1972})
-(def octavia {:name "Octavia E. Butler"
-              :birth-year 1947
-              :death-year 2006})
-(def kay {:name "Guy Gavriel Kay" :birth-year 1954})
-(def dick {:name "Philip K. Dick", :birth-year 1928, :death-year 1982})
-(def zelazny {:name "Roger Zelazny", :birth-year 1937, :death-year 1995})
-
-(def authors #{china, octavia, kay, dick, zelazny})
-
-(def cities {:title "The City and the City" :authors #{china}
-             :awards #{:locus, :world-fantasy, :hugo}})
-(def wild-seed {:title "Wild Seed", :authors #{octavia}})
-(def lord-of-light {:title "Lord of Light", :authors #{zelazny}
-                    :awards #{:hugo}})
-(def deus-irae {:title "Deus Irae", :authors #{dick, zelazny}})
-(def ysabel {:title "Ysabel", :authors #{kay}, :awards #{:world-fantasy}})
-(def scanner-darkly {:title "A Scanner Darkly" :authors #{dick}})
-
-(def books #{cities, wild-seed, lord-of-light,
-             deus-irae, ysabel, scanner-darkly})
+;(def china {:name "China Miéville", :birth-year 1972})
+;(def octavia {:name "Octavia E. Butler"
+;              :birth-year 1947
+;              :death-year 2006})
+;(def kay {:name "Guy Gavriel Kay" :birth-year 1954})
+;(def dick {:name "Philip K. Dick", :birth-year 1928, :death-year 1982})
+;(def zelazny {:name "Roger Zelazny", :birth-year 1937, :death-year 1995})
+;
+;(def authors #{china, octavia, kay, dick, zelazny})
+;
+;(def cities {:title "The City and the City" :authors #{china}
+;             :awards #{:locus, :world-fantasy, :hugo}})
+;(def wild-seed {:title "Wild Seed", :authors #{octavia}})
+;(def lord-of-light {:title "Lord of Light", :authors #{zelazny}
+;                    :awards #{:hugo}})
+;(def deus-irae {:title "Deus Irae", :authors #{dick, zelazny}})
+;(def ysabel {:title "Ysabel", :authors #{kay}, :awards #{:world-fantasy}})
+;(def scanner-darkly {:title "A Scanner Darkly" :authors #{dick}})
+;
+;(def books #{cities, wild-seed, lord-of-light,
+;             deus-irae, ysabel, scanner-darkly})
 
 (defn sum-f [f g x]
   (+ (f x) (g x)))
@@ -38,7 +38,7 @@
   (fn[k] (< k n)))
 
 (defn equal-to [n]
-  (fn[k] (= k n)))
+  (fn[k] (== k n)))
 
 (defn set->predicate [a-set]
   (fn[a-map] (contains? a-set a-map)))
@@ -67,7 +67,7 @@
   (if (some pred a-seq) (some pred a-seq) false))
 
 (defn my-every? [pred a-seq]
-  (pred a-seq))
+  (not (some (complement pred) a-seq)))
 
 (defn prime? [n]
   (let [pred (fn[div] (= (mod n div) 0))]