O roteiro original indica que os engenheiros semearam seu DNA no mundo no ano 12,000 BC
A vida já estava presente em abundância e sua contribuição era (presumivelmente) mutagênica, transformando a vida existente ao invés de criá-lo do zero.
FADE IN: EXT. EARTH - DAY (12,000 B.C.)
The world turns below us, vast and slow.
A RUMBLE. A shadow sweeps over the land. We move with the shadow. We
cast the shadow. Landscapes slide by. Reduced by altitude to
abstractions: river deltas, forests and flood plains. A raw natural
world. No trace of civilization.
The shadow glides over mountains and glaciers. Across an ocean and a
pale beach. Over lowland plain at the foot of a VOLCANIC MOUNTAIN it
stops.
EXT. LOWLAND PLAIN - DAY
THREE FIGURES walk out of the shadow.
They are men - and yet not men. Their skin is snow-white. Their
features heavy and classical - as if Rodin's Thinker had risen from
his seat. Their smooth heads are earless and hairless. Their
glittering eyes entirely black.
Against the stark land their height is impossible to judge.
They are ENGINEERS.