try that with a Muton... 
I'm using knives on them regularly, they die like little girls they are in close combat.
But back to topic: I guess this is worth bringing up again, as it concerns a vital gaming element. It's not just about vision, but about detection in general.
It appears to me that detection can be divided into several categories, which generally are in game anyway:
- Sight. We all know how it works in RL and the game. Used by humans and most aliens. It can be sub-divided into two categories: day-light vision (used by humans, Ethereals and Reapers) and night vision (used by Sectoids, Floaters, Snakemen, Mutons and Chryssalids).
- Movement detection. Used by the motion scanner and apparently nothing else. Naturally, it's not real-time, as it only detects movement done in opponent's last/your present turn.
- Psionic scan. It works like a combination of both, as it's real-time, circular and not limited by either lighting or obstacles. Used by Ethereals, Sectoid leaders/commanders, and I think Silacoids and Celatids too.
I don't know what Cyberdiscs and Sectopods use, but I guess just sight (probably night vision).
Yeah, Mind Probe would be much more attractive if it could function similarly to a motion scanner. Naturally, it'd invalidate the motion scanner in most cases; however, robotic units (Cyberdiscs, Sectopods and HWPs) wouldn't show on the Probe.
Also, I suggest we change the thread's topic to reflect the fact it's about detection/visibility, please.
