How believable does the Time Traveller's explanation of time as a 4th dimension sound

Though the TT uses scientific ideas about time and relativity that were circling around the 1890s (Albert Einstein would later draw them together for his groundbreaking 1905 paper on relativity), "The Time Machine" is ultimately not a deep scientific investigation into relativism and time. Wells completely ignores one of the paradoxes of time travel that many believe prohibits its existence: that of cause-and-effect. For instance, if there were time travel, then someone could go back in time and kill his past self, but this is impossible since his future self would not exist in the first place. Wells skirts this paradox by eventually sending the TT only into the future and not backward into the past.