No validation method was proposed.

BG (Leader of '7 millions years-old') has the opinion that 7 millions years-old (27/10/2013 16h37)

BG (Leader of '7 millions years-old') says Sahelanthropus tchadensis is an extinct hominine species that is dated to about 7 million years ago, possibly very close to the time of the chimpanzee/human divergence, and so it is unclear whether it can be regarded as a member of the Hominini tribe.[1] Few, if any, specimens are known, other than the partial skull nicknamed Toumaï ("hope of life"). (source Wikipedia) (27/10/2013 16h37)

Dumbo has the opinion that 8 millions years-old because I have random opinions! (27/10/2013 16h41)

Galileo has the opinion that Other because I always follow the minority! (02/10/2018 00h00)

Demago has the opinion that 9 millions years-old because My opinion is that of the majority! (03/10/2018 00h06)