Revealing mistake: When we first see the army of Starks outside Global Dynamics, it's quite obvious that only one of them is actually the actor that plays Stark; the others are merely people who look similar.
Revealing mistake: When Carter and Jo almost crash into the reflective smart dust wall on the road, Carter puts his hand up and waves it, to see his mirror image doing the same. Carter's mirror's hand movements are out of sync, which reveals that the "mirrors" are the actors, and the "real people" are doubles.
Revealing mistake: When Carter and Jo talk to Fargo in the cage, the first clip has him floating in mid-air. Then, the force field expands. It cuts away, and when it goes back to Fargo, they didn't remove the rig he was sitting on to make him float in the first shot.
Revealing mistake: When Jo comes riding in with the horses, you can tell that it's a stuntwoman in the far shot.
All the Rage - S4-E3
Revealing mistake: In the very first shot, we see the sky, and you can tell it's a digital image imposed on a green screen instead of a shot of the actual sky.
Chosen answer: It's basically just a type of suit that's made for whatever special project they're working on. No different than a lab coat, hazmat suit, fire coat, etc.