Yet again Guru Pita ji's advice has kept us clear of danger :
http://www.bbc.com/future/story/20170726-the-polygamous-town-facing-genetic-disaster?ocid=fbert
REmember the science that revealed cigarette smoker condemn infertility on their grandchildren and descendents which mirrors Guru Pita ji's warnings
Why do we believe we need science to prove him right first, before acting on it?