The inertial space time reference frame of the Earth time could be going at a fixed rate whereas a decoy who is going close to the speed of light on a spaceship and/or close to a black hole or planet with high gravitational field could theoretically claim to be seventeen but actually be eighteen on Earth's inertial reference frame.

A decoy recently failed to provide her space time inertial reference frame and thus her claimed age could not be admitted into evidence and the age was objected to on the record due to failing to specify Earth as the space time inertial reference frame.