diff --git a/src/main/java/core/RNG.java b/src/main/java/core/RNG.java
index 22e9eeb..e506167 100644
--- a/src/main/java/core/RNG.java
+++ b/src/main/java/core/RNG.java
@@ -20,9 +20,8 @@ public class RNG {
     private static int envSeed = 13;
     static {
         rng = new Random();
-        rng.setSeed(seed);
         rngEnv = new Random();
-        rngEnv.setSeed(13);
+        setSeed(seed, true);
     }
 
     public static Random getRandom() {
@@ -32,9 +31,16 @@ public class RNG {
         return rngEnv;
     }
 
-    public static void setSeed(int seed){
+    public static void setSeed(int seed, boolean setEnvRandom) {
         RNG.seed = seed;
         rng.setSeed(seed);
-        rngEnv.setSeed(13);
+        if(setEnvRandom) {
+            rngEnv.setSeed(13);
+        }
     }
+
+    public static void setSeed(int seed) {
+        setSeed(seed, true);
+    }
+
 }
diff --git a/src/main/java/core/algo/EpisodicLearning.java b/src/main/java/core/algo/EpisodicLearning.java
index 6e57943..885b6d0 100644
--- a/src/main/java/core/algo/EpisodicLearning.java
+++ b/src/main/java/core/algo/EpisodicLearning.java
@@ -5,17 +5,12 @@ import core.Environment;
 import core.LearningConfig;
 import core.StepResult;
 import core.listener.LearningListener;
-import example.DinoSampling;
 import lombok.Getter;
 import lombok.Setter;
 
-import java.io.File;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.StandardOpenOption;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -80,18 +75,6 @@ public abstract class EpisodicLearning<A extends Enum> extends Learning<A> imple
 
     private void dispatchEpisodeStart(){
         ++currentEpisode;
-        /*
-            2f 0.02 => 100
-            1.5f 0.02 => 75
-            1.4f 0.02 => fail
-            1.5f 0.1 => 16 !
-        */
-//        if(this.policy instanceof EpsilonGreedyPolicy){
-//            float ep = 2f/(float)currentEpisode;
-//            if(ep < 0.02) ep = 0;
-//            ((EpsilonGreedyPolicy<A>) this.policy).setEpsilon(ep);
-//            System.out.println(ep);
-//        }
         episodesToLearn.decrementAndGet();
         for(LearningListener l: learningListeners){
             l.onEpisodeStart();
@@ -103,17 +86,6 @@ public abstract class EpisodicLearning<A extends Enum> extends Learning<A> imple
         super.dispatchStepEnd();
         timestamp++;
         timestampCurrentEpisode++;
-        // TODO: more sophisticated way to check convergence
-        if(false){
-            // t
-            File file = new File(DinoSampling.FILE_NAME);
-            try {
-                Files.writeString(Path.of(file.getPath()),  currentEpisode/2 + ",", StandardOpenOption.APPEND);
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-           // System.out.println("converged after: " + currentEpisode/2 + " episode!");
-        }
     }
 
     @Override
diff --git a/src/main/java/evironment/blackjack/cards/CardDeck.java b/src/main/java/evironment/blackjack/cards/CardDeck.java
index 4878b62..4db62c4 100644
--- a/src/main/java/evironment/blackjack/cards/CardDeck.java
+++ b/src/main/java/evironment/blackjack/cards/CardDeck.java
@@ -29,6 +29,6 @@ public class CardDeck {
             nextInt(int bound) returns random int value from (inclusive) 0
             and EXCLUSIVE! bound
           */
-        return cards.get(RNG.getRandom().nextInt(cards.size()));
+        return cards.get(RNG.getRandomEnv().nextInt(cards.size()));
     }
 }
diff --git a/src/main/java/example/ContinuousAnt.java b/src/main/java/example/ContinuousAnt.java
index e9d7ace..5c1df45 100644
--- a/src/main/java/example/ContinuousAnt.java
+++ b/src/main/java/example/ContinuousAnt.java
@@ -20,7 +20,7 @@ public class ContinuousAnt {
         } catch (IOException e) {
             e.printStackTrace();
         }
-        RNG.setSeed(13);
+        RNG.setSeed(13, true);
         RLController<AntAction> rl = new RLControllerGUI<>(
                 new AntWorldContinuous(8, 8),
                 Method.Q_LEARNING_OFF_POLICY_CONTROL,
@@ -33,7 +33,5 @@ public class ContinuousAnt {
         rl.setLearningRate(0.9f);
         rl.setEpsilon(0.2f);
         rl.start();
-
-
     }
 }
diff --git a/src/main/java/example/DinoSampling.java b/src/main/java/example/DinoSampling.java
deleted file mode 100644
index 6c748ac..0000000
--- a/src/main/java/example/DinoSampling.java
+++ /dev/null
@@ -1,55 +0,0 @@
-package example;
-
-import core.RNG;
-import core.algo.Method;
-import core.controller.RLController;
-import core.controller.RLControllerGUI;
-import evironment.jumpingDino.DinoAction;
-import evironment.jumpingDino.DinoWorld;
-
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.StandardOpenOption;
-
-public class DinoSampling {
-    public static final String FILE_NAME = "converge.txt";
-
-    public static void main(String[] args) {
-        File file = new File(FILE_NAME);
-        try {
-            file.createNewFile();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        for(float f = 0.05f; f <= 1.003; f += 0.05f) {
-            try {
-                Files.writeString(Path.of(file.getPath()), f + ",", StandardOpenOption.APPEND);
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-            for(int i = 1; i <= 100; i++) {
-                int seed = i * 13;
-                System.out.println("seed: " + seed);
-                RNG.setSeed(seed);
-
-                RLController<DinoAction> rl = new RLControllerGUI<>(
-                        new DinoWorld(),
-                        Method.MC_CONTROL_FIRST_VISIT,
-                        DinoAction.values());
-                rl.setDelay(300);
-                rl.setDiscountFactor(1f);
-                rl.setEpsilon(0.5f);
-                rl.setLearningRate(0.9f);
-                rl.setNrOfEpisodes(400000);
-                rl.start();
-            }
-            try {
-                Files.writeString(Path.of(file.getPath()), "\n", StandardOpenOption.APPEND);
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        }
-    }
-}