Time

Time can adequately be defined as the perception of the duration of events. As such, time is entirely limited to the human perception thereof. A sloth, a hummingbird, and a tortoise all likely perceive the passing of time differently than humans do. A hummingbird must surely perceive time to pass much more slowly than a human, as it must flap its wings 40-80 times per second in order to maintain flight. A human on the other hand, can scarcely count past five over the course of a second. Because all organisms seem to perceive time to pass differently, then time as an objective entity must therefore not exist.