Trivia / Star Trek Enterprise S 03 E 21 E Squared

• Acting for Two: Jolene Blalock plays present T'Pol and old T'Pol.
• Development Gag: Malcolm initially mistaking the other Enterprise for Columbia is a reference to the original pitch.
• What Could Have Been: According to Mike Sussman, the original pitch was for the Columbia to be the ship that was thrown back in time and subsequently manned by descendants. Instead of a temporal wormhole, the explanation for this would've relied on Starfleet installing Xindi vortex technology (recovered from the probe device from "The Expanse") on the Columbia.