Factual error: When Jackie and Hak Foo slug it out in empty space, their punches and kicks should keep them helplessly spinning around, since there is neither gravity nor air resistance to break the momentum of their movements.
Factual error: When Jackie releases the lotus flower from his helmet, he starts holding his breath - an unwise move to do in reality. With the pressure in his suit dwindling rapidly and no outside pressure in vacuum to counter the air pressure in his lungs from holding his breath, he would suffer from rapid decompression. While Jackie would not explode, it would cause a most certainly fatal lung trauma.
