They pick and choose the 2 or 3 witness rule to suit themselves and ignore the same principle when it proves them wrong.
As an example ,there are 3 Bible accounts ,3 bible witnesses that show/demonstrate a generation is approximately 50 years long. However they ignore these 3 scriptual reasons and come up with a ludicrous unbiblical explanation of an overlapping generation to explain away there failed doctrine about 1914 and the generation that will not pass away which they taught for decades.
1.Matt.1: 17 = 42 generations Abraham Born 2018 BC - Jesus born 2 BC = 2016 years divided by 42 = 48 Years .
2.Luke.3:23-38 =76 Generations from Adam to Jesus ,a span of 4024 years according to WT chronology 4024 divided by 76 = 53 years
3. Luke 21:20-24 Jesus died about the year 33 ? prophecy fullfilled 70 AD well within the 50 year generation period. "This generation will by no means pass away"
There is one more biblical witness which also gives a figure of a generation being about 50 years and just can`t think of it at the moment.
However that`s 3 Biblical witnesses that identify a generation being in the ballpark number of 50 plus or minus a few years and not this ludicrous overlapping generation bullshit.
By the way Thinkforyourself Welcome to the forum .