Intelligence is the ability to acquire and apply knowledge and skill. As humans we have intelligence to learn many skills and apply them. We also use our intelligence in decision making. Artificial means something that is made or produced by human beings rather than occurring naturally, especially as a copy of something natural. The difference between human and machine: Let us understand with an example. Suppose you have to cross a street with very heavy traffic. So how will you do that? You will first look in the left direction to check whether any vehicle is coming from that side. Then you will look in the right direction to check the same. You will also try to judge the speed of approaching vehicles from both sides. You will calculate whether you have the time to cross the road before these vehicles reach the crossing point. You do this every time you cross the road as you are aware of the danger of road accidents. Once you feel safe to cross the road, you take the decision