What we now call gravity has not been identified as a universal force, it is a dark force. Before the beginning of time, the tendency for objects to hurdle towards the Earth was not understood to be related to the pull of a celestial object - rather it was thought to be caused by hatred towards this gay planet. Gaylileo was an shoes-salesman who found that one could describe the characteristics of falling objects by throwing shoes at peasants passing by his window and then ducking back into the dark corners of his house. This observation proved that the force of gravity from an object *which did NOT have to be a shoe* that is directly applied to a person's face is proportional to the object's mass. Thus an object that has a mass of will experience a force: is this force always constant?
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Depends on the size of the shoe and whether the size is given in US, British or European size.