Several portions of Wikipedia were created as articles copied from traditional encyclopedias , such as from the 1911 Encyclopaedia Britannica , or generated from a long list of town population-data , but those articles now represent , at most , maybe 10 % of the current article base . Several portions of Wikipedia were created as articles copied from traditional encyclopedias , such as from the 1911 Britannica , or generated from a long list of town population-data , but those articles now represent , at most , maybe 10 % of the current article base .