The mimic knows what it is at all times. It knows this because it knows what it isn't. By subtracting what it is from what it isn't, or what it isn't from what it is (whichever is greater),

Pen name: Delila H. Smith (the H is silent). Thirtysomething trans lesbian, snugglemuffin, girlthing. Devil but in like a catgirl sort of way, perennial emotional wreck, too gay for this. Minors, please don't follow.
The mimic knows what it is at all times. It knows this because it knows what it isn't. By subtracting what it is from what it isn't, or what it isn't from what it is (whichever is greater),