diff --git a/app/controllers/conflicts_controller.rb b/app/controllers/conflicts_controller.rb
deleted file mode 100644
index 596bab3..0000000
--- a/app/controllers/conflicts_controller.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-class ConflictsController < ApplicationController
-  def index
-    @talks = Talk.ordered_by_rating
-  end
-
-  def show
-  end
-
-  def pivot
-    @talks = Talk.ordered_by_id
-    @conflict_coefficients = ConflictCoefficient.all
-  end
-end
diff --git a/app/models/conference_summary.rb b/app/models/conference_summary.rb
deleted file mode 100644
index ef34a98..0000000
--- a/app/models/conference_summary.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-class ConferenceSummary
-  def initialize(params = {})
-    @talk_ids = params[:talk_ids]
-  end
-
-  def number_of_ballots
-    TalkPreference.joins(:selected_talks)
-                   .where(selected_talks: {
-                                           talk_id: @talk_ids
-                                          })
-                   .uniq.count
-  end
-
-  def ratings
-
-  end
-end
diff --git a/app/models/conflict_coefficient.rb b/app/models/conflict_coefficient.rb
deleted file mode 100644
index 682786b..0000000
--- a/app/models/conflict_coefficient.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-class ConflictCoefficient
-  attr_reader :left, :right
-
-  def self.all
-    Talk.find(:all, from: :halfnarp_friendly).map(&:id).combination(2).map do |talks|
-      ConflictCoefficient.new talks.first, talks.last
-    end
-  end
-
-  def self.all_as_hash
-    conflicts_hash = {}
-
-    all.each do |coefficient|
-      conflicts_hash[coefficient.left] = {} unless conflicts_hash[coefficient.left]
-      conflicts_hash[coefficient.left][coefficient.right] = coefficient.per_cent
-    end
-
-    conflicts_hash
-  end
-
-  def conflicts
-    talk_preferences.joins('INNER JOIN "selected_talks" AS "left"
-                            ON "left"."talk_preference_id" = "talk_preferences"."unique_id"
-                            INNER JOIN "selected_talks" AS "right"
-                            ON "right"."talk_preference_id" = "talk_preferences"."unique_id"').where(left: {talk_id: @left}, right: {talk_id: @right}).count
-  end
-
-  def total_votes
-    talk_preferences.count
-  end
-
-  def initialize(left, right)
-    @left, @right = left, right
-  end
-
-  def per_cent
-    Rational(100 * conflicts, total_votes).to_f
-  end
-
-  private
-
-  def talk_preferences
-    @talk_preferences ||= TalkPreference.this_years
-  end
-end
diff --git a/app/models/ratings.rb b/app/models/ratings.rb
deleted file mode 100644
index 920f123..0000000
--- a/app/models/ratings.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-class Ratings
-  def initialize
-    @ratings = {}
-  end
-
-  def [](id)
-    @ratings[id] ||= SelectedTalk.where(talk_id: id).count
-  end
-end
diff --git a/app/models/summary.rb b/app/models/summary.rb
deleted file mode 100644
index 165c937..0000000
--- a/app/models/summary.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-class Summary
-  def initialize(params = {})
-    @talk_id, @other_talk_ids = params[:talk_id], params[:other_talk_ids]
-    @votes_count = SelectedTalk.where(talk_id: @talk_id).count
-    @all_votes_count = TalkPreference.joins(:selected_talks).where(selected_talks: {talk_id: @other_talk_ids << @talk_id}).uniq.count
-  end
-
-  def summary
-    {
-     talk_id: @talk_id,
-     votes: @votes_count,
-     all_votes: @all_votes_count,
-     per_cent: Rational(@votes_count, @all_votes_count).to_f,
-     conflicts: conflicts
-    }
-  end
-
-  def conflicts
-    @other_talk_ids.map do |right|
-      [right, ConflictCoefficient.new(@talk_id, right).conflicts]
-    end.sort_by(&:last).to_h
-  end
-end
diff --git a/app/views/conflicts/index.csv.erb b/app/views/conflicts/index.csv.erb
deleted file mode 100644
index b9804ff..0000000
--- a/app/views/conflicts/index.csv.erb
+++ /dev/null
@@ -1,5 +0,0 @@
-<%- csv_headers = ['Event'] + @talks.map { |talk| [talk.title, talk.id].join(' ') } -%>
-<%= CSV.generate_line(csv_headers).html_safe -%>
-<%- @talks.each do |left| -%>
-  <%= CSV.generate_line([[left.title, left.id].join(' ')] + @talks.map { |right| left.id == right.id ? '-' : ConflictCoefficient.new(left.id, right.id).per_cent}).html_safe -%>
-<%- end -%>
diff --git a/app/views/conflicts/pivot.csv.erb b/app/views/conflicts/pivot.csv.erb
deleted file mode 100644
index 95029a5..0000000
--- a/app/views/conflicts/pivot.csv.erb
+++ /dev/null
@@ -1,5 +0,0 @@
-<%- headers = ['left', 'right', 'conflicts', '%'] -%>
-<%= CSV.generate_line headers -%>
-<%- @conflict_coefficients.each do |conflict_coefficient| -%>
-  <%= CSV.generate_line([conflict_coefficient.left, conflict_coefficient.right, conflict_coefficient.conflicts, conflict_coefficient.per_cent]).html_safe -%>
-<%- end -%>
diff --git a/app/views/home/_talk.csv.erb b/app/views/home/_talk.csv.erb
deleted file mode 100644
index 6cf9741..0000000
--- a/app/views/home/_talk.csv.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= CSV.generate_line([talk.id, talk.event_type.name, talk.title, talk.subtitle, @ratings[talk.id], "%.2f%" % Rational(100 * @ratings[talk.id], @votes_count).to_f]).html_safe -%>
diff --git a/app/views/home/_talk.html.erb b/app/views/home/_talk.html.erb
deleted file mode 100644
index e69de29..0000000
diff --git a/app/views/home/_talk_preference.csv.erb b/app/views/home/_talk_preference.csv.erb
deleted file mode 100644
index 79dff36..0000000
--- a/app/views/home/_talk_preference.csv.erb
+++ /dev/null
@@ -1,3 +0,0 @@
-<% talk_preference.talks.each do |talk| %>
-  <%= CSV.generate_line([talk_preference.hashed_unique_id, talk_preference.created_at, talk]).html_safe -%>
-<% end %>
diff --git a/app/views/home/conflicts.html.erb b/app/views/home/conflicts.html.erb
deleted file mode 100644
index 10abc5a..0000000
--- a/app/views/home/conflicts.html.erb
+++ /dev/null
@@ -1,13 +0,0 @@
-<table>
-  <thead>
-    <tr>
-      <th>Event</th>
-      <% @talks.each |talk| do %>
-        <th><%= talk.title %> (<%= talk.id %>)</th>
-      <% end %>
-    </tr>
-  </thead>
-  <tbody>
-    <%= render partial: 'conflict_coefficient', collection: @conflict_coefficients %>
-  </tbody>
-</table>
diff --git a/app/views/home/export.csv.erb b/app/views/home/export.csv.erb
deleted file mode 100644
index 56469cb..0000000
--- a/app/views/home/export.csv.erb
+++ /dev/null
@@ -1,3 +0,0 @@
-<%- headers = ['ID', 'Created at', 'Talk'] -%>
-<%= CSV.generate_line headers -%>
-<%= render partial: 'talk_preference', collection: @talk_preferences %>
diff --git a/app/views/home/ratings.csv.erb b/app/views/home/ratings.csv.erb
deleted file mode 100644
index dab9902..0000000
--- a/app/views/home/ratings.csv.erb
+++ /dev/null
@@ -1,3 +0,0 @@
-<%- headers = ['ID', 'Type', 'Title', 'Subtitle', 'Votes', '%'] -%>
-<%= CSV.generate_line headers -%>
-<%= render partial: 'talk', collection: @talks %>
diff --git a/app/views/home/ratings.html.erb b/app/views/home/ratings.html.erb
deleted file mode 100644
index 452d134..0000000
--- a/app/views/home/ratings.html.erb
+++ /dev/null
@@ -1,24 +0,0 @@
-<table>
-  <thead>
-    <tr>
-      <th>ID</th>
-      <th>Type</th>
-      <th>Title</th>
-      <th>Subtitle</th>
-      <th>Votes</th>
-      <th>%</th>
-    </tr>
-  </thead>
-  <tbody>
-    <% @talks.each do |talk| %>
-      <tr class="rating">
-        <td><%= talk.id %></td>
-        <td><%= talk.event_type.name %></td>
-        <td><%= talk.title %></td>
-        <td><%= talk.subtitle %></td>
-        <td><%= @ratings[talk.id] %></td>
-        <td><%= "%.2f%" % Rational(100 * @ratings[talk.id], @votes_count).to_f %></td>
-      </tr>
-    <% end %>
-  </tbody>
-</table>
diff --git a/app/views/home/summary.json.jbuilder b/app/views/home/summary.json.jbuilder
deleted file mode 100644
index 525c250..0000000
--- a/app/views/home/summary.json.jbuilder
+++ /dev/null
@@ -1 +0,0 @@
-json.merge! @summary.summary