“It was all in the dream,” Cameron said, “I woke up super excited and I actually drew it. So I actually have a drawing." He saved the sketch from a previous experience.
Cameron’s "The Terminator" was also inspired by a dream, but closely resembled "The Outer Limits" episode called "Soldier," written by Harlan Ellison, who famously sued him.
This time, Cameron knew that having a sketch that could be dated to prove when an idea was conceived could clear up any legal disputes over intellectual property.
Cameron added, “[...] There's always some freak with tinfoil under their wig that thinks you've beamed the idea out of their head. And it turned out there were 10 or 11 of them."