Do you want to talk about big data, how businesses use it now, and why?

Please agree/disagree and add a little more information regarding the below statement. "The impact of Big Data on my daily life, and the daily lives of most people on this planet, mainly pertains to the ceaseless collection of information I create during my time spent on the Internet. It pains me to know that no matter what I do online, some data collection tool is watching and transmitting every move I make, so that I cannot even accidentally click on something without some tech company like Google thinking that I am interested in whatever product or website I went to. The personalized ads that arise from this data collection are the most easily observable affects of Big Data in my life, and while it is generally nice to see ads for products that I find interesting, as opposed to TV ads for products that I have no connection to, I do not like the idea of companies spying on me in order to profile my online habits and deliver me those ads. The risk of having so much data in today's…

Please explain the following: what are the three defining characteristics of big data, and how do these relate to the data that healthcare providers collect, such as mercy data?

Why and how are businesses currently using big data?