"Special curvature propulsion system," Tony corrected, matching her smile, his helmet shifted under his arm to free his illustrative hands. He understood needing to be alone, especially when cooped up in the stone age with Barton, but that was him. The pair of them came back from Malibu like Sid and Nancy, the whole world against their perfect little partnership. Tony was regretting leaving that cigarette now, nothing to do with his hands and apparently no one around for miles to disturb with a little timeslip, but at least he had a lot to explain without having to dip into Wanda's living conditions. "Not as in specialized, but special relativity, specifically time dilation and length contraction. And, specifically, you're storing an engine, it just happens to make wormholes to places which, theoretically, run congruent to our own timespace. Technically, we're still there, just have a new perspective." That should have been a little comforting, or so Tony's grin said before he looked around again and it instantly faded like he hadn't even meant for it to be more than temporary. A lesson in timetravel was probably as interesting to Wanda as glowing fingers were to Tony. He did know what was interesting to both of them, and, forgoing a segue, the storm still swirling outside so thick he had to watch for the movement, asked, "Did you know about the orphans?"