Elias wiped the sweat from his forehead and looked at the perfectly silent machine. "What is it then?"

Then, it settled. The blue glow faded, and the machine cooled instantly, frost forming on the bolts.

Sarah looked down at the tablet, scrolling to the last page of the technical specifications. "Elias... I think we missed a footnote in the . It’s not just a power regulator."

"According to the fine print," she whispered, "at peak discharge, it displaces mass. We didn't just test a component. We just sent the testing bolt three seconds into the future."