From his formative years, Vulcans have taught and strive to follow logic over the dictates of their emotional states. And yet, when confronted with one of his selves who went on a different path, there was not wild emotional display, but cold logic, emotional control, and all of the aspects associated with an adult Vulcan in full control of all his faculties.

There must be a deficiency in logic somewhere, then, that would allow a person such as his other self to come into existence in any universe, some element that could not be explained away by mixed heritage, as he knew other Vulcans would suggest as the simplest solution to the problem.