These discoveries contradicts the classical hypothesis that the modern behaviour existed only NUMBER@1 years ago and was reached through a „ large cultural leap `` Nature NUMBER@2 , NUMBER@3 -LRB- NUMBER@4 -RRB- .

The discovery contradicts the classical hypothesis that the modern behaviour existed only NUMBER@1 years ago . It also contradicts that this behaviour was reached through a „ large cultural leap `` Nature NUMBER@2 , NUMBER@3 -LRB- NUMBER@4 -RRB- .
