You lack the ability and/or understanding to use human tools, machines, and other devices. It can be a matter of physical form, but also a mindset; technology and magic devices are simply beyond your comprehension, and your bestial nature prevents the use of most types of schticks except creature powers. Depending on your type, some abilities, schticks or types of tools may be excepted; a werewolf could still use Animals schticks (if he has them), and a construction robot may still be able to use elevators and other heavy machinery. Neither of them could use a Fu schtick, sword, cellular phone, or magic wand.