We are facing extremely huge volume of data or information everyday.
It is also growing so quickly and no one is capable of recognizing all the information surrounding him/her.
This is the data to show the growing gap between the total data volume and consumed(recognized) data volume in Japan.
source: Ministry of internal affairs and communications of Japan
The green line shows total data volume available and the red one shows total data volume consumed.
Needless to say, one has a limit of the information size to recognize and manage as a human being, while we are surrounded by the even more huge volume of data than you can recognize.
Data analysis may solve the issue by summarizing and/or extracting the valuable information out of the data, which you will never be able to see by yourself.
Now it makes sense that there is a huge gap between one who knows how to do it(i.e. data analysis) and one who does not.