I don't think so. pragmatic, analytical, and logical? yes. But the difference (on the whole) for a rational would be to focus on improvement, to remain even tempered, and to focus on abstractions being applied in a useful manner, none of which are specific to an ISTJ. It's been my experience that the average ISTJ does not always take into account optimization, other people's concerns or emotions, or patterns of thought that require non-linear approaches. Don't get me wrong there certainly is a value in both approaches, I just think that many ISTJ's do what could be construed as "irrational" things because they are unwilling to find value in experiences beyond their knowledge, sometimes are quite rough around the edges with others who disagree with them, and at times, unnecessarily obstinate. Being logically oriented can be valuable, of course, but experimentation and inquisitiveness that comes naturally to an "N" is something that needs to be interjected into the process to observe the world from a perspective that does not necessarily come with a bias. Still, I enjoy listening to an ISTJ (as long as their opinion is not being forced on me) because I think their particular brand of detailed insight can be helpful to isolate important ideas.