Imagine if Grace time traveled back into the vat and decided to not tell anyone cause of course everyone would think he's gone crazy by the stress and put him in a mental hospital.
Except everyone figures it out in a few weeks cause there's no way the wet puppy science guy of Eva stratt suddenly becomes way more confident, started to accompany the astronauts in their training and actually could keep up with yao in piloting, could balance himself and put on the EVA suit perfectly. And suddenly starting to suggest creating a prob that could get Inside a planets atmosphere to collect samples
Everyone figures out he's definitely a time traveller and one day Eva randomly asked if there was a possibility of intelligent sentient life form of existing and distracted sleep deprived Grace speaks out "yeah Rocky's very intelligent the greatest eridians engineer - WAIT" And everyone screams
