Bottom line is the WT Society redefines definitions of words into some fantasy made up definitions to suit their own doctrines.
REAL definition of the word " generation " in the Webster's New World College Dictionary : " generation - 3. a single stage or degree in the succession of natural descent ( father and son are two generations ) 4. the average period ( about thirty years ) between the birth of one generation and that of the next . "
So - Not too difficult to understand.
WT Society's definition is : generation about 70 years 1914 - 1984 .
The REAL world's definition is : generation is 30 years.
So in reality from 1914 to 2015 it has actually been 3 generations plus 11 years.
If you count from 1879 to 2015 ( when Russell first made these asinine predictions ) it has in the real world been exactly 4 generations plus 16 years.
I swear I'm getting tempted real soon to start a thread on WT Society fake definitions of words compared to REAL definitions of words. Peace out, Mr. Flipper