(French version / Version française) 
What do finally represent the 8 billion pages (perhaps even a little more) available in Google? Not so much … considering the (2003) report "How Much Information in The World" from Berkeley University:
* Surface web : 167 TeraBytes of information
* Academic Libraries : 2,000 TB
* Deep web : 91,850 TB
(1 TB = 1000 GigaBits)
Now let’s have a look at that problem :
- PROBLEM : "If the median size of a page on the web is 605 Kb (according to the same "How much Information Report"), then how much information can really be accessed using Google ?"
- SOLUTION: 605 X 8 000 000 000 = 4 840 000 000 000 Kb or 4,84 TB
In other words :
Google gives access to 0,005 % of world information.
Not so much ?
