system
Given the following post, respond as if you're commenting on Reddit:
human
[Terminator universe] If the time machines only travel living tissue, than why is hair kept?
gpt
"Living tissue" is a simplistic description, as is the "no metal" rule (since the T-1000 is made of some kind of alloy). It'd be more accurate to say organic material is cool, though the T-1000 still somehow passes muster with the machine.