Predicting Groupthink

(A Magic Trick)

Laurence O’Toole

Royal Holloway - Maths Department

MathsJam 2019

Intro Prediction Setup The Game Reveal Outro

Heigh-Ho

Shuffle and deal.

Intro Prediction Setup The Game Reveal Outro

Contents

1 Intro

2 Prediction

3 Setup

4 The Game

5 Reveal

6 Outro

Intro Prediction Setup The Game Reveal Outro

Introduction

Hi, I’m Laurence.

Intro Prediction Setup The Game Reveal Outro

Introduction

Hi, I’m Laurence.

Intro Prediction Setup The Game Reveal Outro

Prediction

Night of the Flying Penguin

Favourite colour?

Intro Prediction Setup The Game Reveal Outro

Prediction

Night of the Flying Penguin

Favourite colour?

Intro Prediction Setup The Game Reveal Outro

Prediction

Night of the Flying Penguin

Favourite colour?

Intro Prediction Setup The Game Reveal Outro

Setup

If you have a card, please stand up.

Intro Prediction Setup The Game Reveal Outro

Setup

If you have a card, please stand up.

Intro Prediction Setup The Game Reveal Outro

Round One

Dawn of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round One

Dawn of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round One

Dawn of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round One - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round One - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round One - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Two

Day of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Two

Day of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Two

Day of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Two - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Two - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Two - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Three

Land of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Three

Land of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Three

Land of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Three - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Three - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Three - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Four

Diary of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Four

Diary of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Four

Diary of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Four - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Four - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Four - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Five

Survival of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Five

Survival of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Five

Survival of the Flying Penguin

Pick a card, any card.

Intro Prediction Setup The Game Reveal Outro

Round Five - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Five - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Round Five - Rules

Rule oneIf someone picks your number, thencall out the big word on the back.

Rule twoIf you hear one of the small words onthe back, then sit down.

Intro Prediction Setup The Game Reveal Outro

Some Mental Arithmetic

Intro Prediction Setup The Game Reveal Outro

Some Mental Arithmetic

Product?

Intro Prediction Setup The Game Reveal Outro

Some Mental Arithmetic

((((((((hhhhhhhhProduct?

Sum?

Intro Prediction Setup The Game Reveal Outro

Fin

Penguin/cards to the front, please.

Thank you.