Lisa Trevor in REmake was supposed to be this untouchable, super strong, immortal mutant ugo, right? Yet her hands were bound by what looked to be nothing more than a wooden board with a little bit of iron...couldn't she have just tore that shit like rice paper? Also, she seemed to be allowed to wander the grounds pretty freely...was she docile to the researchers, or were they playing some sort of sick, elaborate game of hide-seek-when they'd hear her coming? Like, "Oh shit! Gary, she's coming-quick, duck in a closet! She'll just sniff the air a little, piss herself, sob inconsolably, then leave. It's hilarious!". If that's the case, then maybe the wooden board & chains were more like one of those bell collars people get their cats or those squeaky shoes for toddlers they make in Japan-you can hear them whenever they're near & therefore have a general bearing on their location.