# Week 1a - Introduction
###### [Video Link](https://www.dropbox.com/s/vdlatpurfghiv7a/Week%201a%20-%20Intro.mp4?dl=0)

## What is AI
**Definition**: The study of how to produce machines that have some of the qualities that the **human mind** has, such as the ability to understand language, recognise pictures, solve problems, and learn.

The advent of AI is brought about by the Turing Test, which was invented in 1950. The objective of this test is to determine whether the entity that the tester is conversing with is a human / machine.

First Chatbot: "[ELIZA](https://www.masswerk.at/elizabot)". Very limited set of responses (feels like a state machine).

More loosely, AI is an umbrella term for:
- Reasoning with logical and hard coded knowledge
- Machine learning, where outcomes are only valid up to some probability
- Probabilistic modelling
- Reinforcement learning
- Planning
- Smart and brute force search
- Robots without much intelligence

Another definition of AI as a discipline is that it is one that systemizes and automates intellectual tasks to create machines that: think like humans, act like humans, think rationally, and act rationally.

## Turing Test
A human interrogator is faced with a human and an AI system. The objective of the interrogator is then to determine whether a particular task is done by the AI system or human. If the interrogator fails to differentiate the machine's responses from the human's, the machine is said to have passed the Turing test.

It is a black box test -- a test of behavior and not the internals of the machine.