Dear sir, Data is facts and figures and if that is generated in huge quantity that can be called big data. Librarians for long have been involving in processing huge quantum of data generated through various means such as patrons data, usage statistics of various kinds for example opac search data etc. Bibliometrics itself is an example for big data. Bringing context through data analysis to big data (any kind) has become much easier in recent times through machine. Imagine a city traffic data could it be possible to collect all that previously, now technology has made it possible and also helps in processing this for identifying some pattern to identify solutions to existing traffic problems. For librarians big data is not new. But over the years the name big data has attracted the masses in a big way because of the data generated in social media and the opportunity it has provided to analyze them with lightning speed. Big data can also be a big brother remember Cambridge analytica . Data is oil, data is money, data is gold. So it is big data! (Jokingly). ------------------------- With best wishes Vasantha Raju N.Mysore