What is Machine learning & Top 5 skills required to become a Machine Learning expert

Machine Learning is simply making a computer perform a task without explicitly programming it. If we impose business rules to build a system and not let the machine find patterns on its own, we will not be able to put up with the versatility of the data that comes in. Let's explain this with an example. Suppose we manually looked through data to find patterns and coded our systems such that if I fall in the age range of 30-40 and I am a male, I would like product X more than product Y. What we did not consider is the personalization parameter.