To understand history and philosophy of science, there is the need to get well acquainted with brief history of science irself. Science is easily recognizable to people largely because of the numerous technological objects which are used all over. Apart from its place in technological development, science is often thought to be the ultimate form of objective and rational inquiry, and scientist are widely regarded as being able to gather and interpret evidence and use it to arrive at conclusions that are 'scientifically proven'. For example, court do routinely rely onto a large extent on the evidence of an expert witness who is a scientist of some sort to convict or acquire someone of a crime. Just like in this example, in almost all areas of modern life ( health, weather, agriculture,etc),people are likely to seek or rely in directly upon the scientific evidence and the opinions of scientists before making important decision. This is one reason why understanding and thinking about science is important.