## Achilles and the Tortoise

### September 28th, 2011

1:07

Ancient mathematical trickery proves that a mighty hero cannot overtake a tortoise.

## Transcript -- Achilles and the Tortoise

### September 28th, 2011

Transcript -- Ancient mathematical trickery proves that a mighty hero cannot overtake a tortoise.

## The Grandfather Paradox

### September 28th, 2011

1:07

A well known story that questions the logic of time travel.

## Transcript -- The Grandfather Paradox

### September 28th, 2011

Transcript -- A well known story that questions the logic of time travel.

## The Chinese Room

### September 28th, 2011

1:08

An argument against computers ever being truly intelligent.

## Transcript -- The Chinese Room

### September 28th, 2011

Transcript -- An argument against computers ever being truly intelligent.

## Hilbert’s Infinite Hotel

### September 28th, 2011

1:09

A never-ending hotel, always full of guests, helps to explain the nature of infinity.

## Transcript -- Hilbert’s Infinite Hotel

### September 28th, 2011

Transcript -- A never-ending hotel, always full of guests, helps to explain the nature of infinity.

## The Twin Paradox

### September 28th, 2011

1:09

An identical twin in space illustrates Einstein's special theory of relativity.

## Transcript -- The Twin Paradox

### September 28th, 2011

Transcript -- An identical twin in space illustrates Einstein's special theory of relativity.

## Schrödinger’s Cat

### September 28th, 2011

1:11

This famous experiment tackling quantum theory involves a cat in a potentially lethal box.

## Transcript -- Schrödinger’s Cat

### September 28th, 2011

Transcript -- This famous experiment tackling quantum theory involves a cat in a potentially lethal box.