Citation de Monocle
c'est une très grosse hypothèse, aucune conclusion à en tirer

David wakes the Engineer from stasis and speaks to him in Proto-Indo-European[4] to try to explain what Weyland wants. The Engineer responds by decapitating David and killing Weyland and his team, before reactivating the spacecraft.

https://languagelog.ldc.upenn.edu/nll/?p=4008