diff --git a/src/batch.rs b/src/batch.rs
index fd040c5..e97769c 100644
--- a/src/batch.rs
+++ b/src/batch.rs
@@ -107,94 +107,13 @@ pub struct Batch {
 }
 
 impl Batch {
-    pub fn new(
-        composition: Vec<Vec<Vec<Index>>>,
-        results: Vec<Vec<f64>>,
-        weights: Vec<Vec<Vec<f64>>>,
-        time: i64,
-        p_draw: f64,
-        agents: &HashMap<Index, Agent>,
-    ) -> Self {
-        assert!(
-            results.is_empty() || results.len() == composition.len(),
-            "TODO: Add a comment here"
-        );
-        assert!(
-            weights.is_empty() || weights.len() == composition.len(),
-            "TODO: Add a comment here"
-        );
-
-        let this_agent = composition
-            .iter()
-            .flatten()
-            .flatten()
-            .collect::<HashSet<_>>();
-
-        let skills = this_agent
-            .iter()
-            .map(|&idx| {
-                let elapsed = compute_elapsed(agents[idx].last_time, time);
-
-                (
-                    *idx,
-                    Skill {
-                        forward: agents[idx].receive(elapsed),
-                        elapsed,
-                        ..Default::default()
-                    },
-                )
-            })
-            .collect::<HashMap<_, _>>();
-
-        let events = composition
-            .iter()
-            .enumerate()
-            .map(|(e, event)| {
-                let teams = event
-                    .iter()
-                    .enumerate()
-                    .map(|(t, team)| {
-                        let items = team
-                            .iter()
-                            .map(|&agent| Item {
-                                agent,
-                                likelihood: N_INF,
-                            })
-                            .collect::<Vec<_>>();
-
-                        Team {
-                            items,
-                            output: if results.is_empty() {
-                                (event.len() - (t + 1)) as f64
-                            } else {
-                                results[e][t]
-                            },
-                        }
-                    })
-                    .collect::<Vec<_>>();
-
-                Event {
-                    teams,
-                    evidence: 0.0,
-                    weights: if weights.is_empty() {
-                        Vec::new()
-                    } else {
-                        weights[e].clone()
-                    },
-                }
-            })
-            .collect::<Vec<_>>();
-
-        let mut this = Self {
+    pub fn new(time: i64, p_draw: f64) -> Self {
+        Self {
+            events: Vec::new(),
+            skills: HashMap::new(),
             time,
-            events,
-            skills,
             p_draw,
-        };
-
-        this.iteration(0, agents);
-
-        this
+        }
     }
 
     pub(crate) fn add_events(
@@ -492,7 +411,9 @@ mod tests {
             );
         }
 
-        let mut batch = Batch::new(
+        let mut batch = Batch::new(0, 0.0);
+
+        batch.add_events(
             vec![
                 vec![vec![a], vec![b]],
                 vec![vec![c], vec![d]],
@@ -500,8 +421,6 @@ mod tests {
             ],
             vec![vec![1.0, 0.0], vec![0.0, 1.0], vec![1.0, 0.0]],
             vec![],
-            0,
-            0.0,
             &agents,
         );
 
@@ -568,7 +487,9 @@ mod tests {
             );
         }
 
-        let mut batch = Batch::new(
+        let mut batch = Batch::new(0, 0.0);
+
+        batch.add_events(
             vec![
                 vec![vec![a], vec![b]],
                 vec![vec![a], vec![c]],
@@ -576,8 +497,6 @@ mod tests {
             ],
             vec![vec![1.0, 0.0], vec![0.0, 1.0], vec![1.0, 0.0]],
             vec![],
-            0,
-            0.0,
             &agents,
         );
 
@@ -647,7 +566,9 @@ mod tests {
             );
         }
 
-        let mut batch = Batch::new(
+        let mut batch = Batch::new(0, 0.0);
+
+        batch.add_events(
             vec![
                 vec![vec![a], vec![b]],
                 vec![vec![a], vec![c]],
@@ -655,8 +576,6 @@ mod tests {
             ],
             vec![vec![1.0, 0.0], vec![0.0, 1.0], vec![1.0, 0.0]],
             vec![],
-            0,
-            0.0,
             &agents,
         );
 
diff --git a/src/history.rs b/src/history.rs
index 0e4fb51..4780205 100644
--- a/src/history.rs
+++ b/src/history.rs
@@ -367,17 +367,18 @@ impl History {
                     agent.message = b.forward_prior_out(a);
                 }
             } else {
-                let b = Batch::new(composition, results, weights, t, self.p_draw, &self.agents);
+                let mut batch: Batch = Batch::new(t, self.p_draw);
+                batch.add_events(composition, results, weights, &self.agents);
 
-                self.batches.insert(k, b);
+                self.batches.insert(k, batch);
 
-                let b = &self.batches[k];
+                let batch = &self.batches[k];
 
-                for a in b.skills.keys() {
+                for a in batch.skills.keys() {
                     let agent = self.agents.get_mut(a).unwrap();
 
                     agent.last_time = if self.time { t } else { i64::MAX };
-                    agent.message = b.forward_prior_out(a);
+                    agent.message = batch.forward_prior_out(a);
                 }
 
                 k += 1;