The other day my British grandma, who doesn't always see eye to eye with me, said that I have tunnel vision. Her son, my dad, has basically said the same thing in other words. Others have refered to the same phenomenon with a slightly more optimistic outlook calling me focused. The first interesting thing to point out is that a certain objective phenomenon can be interpreted in different ways. Those who are rendered insignificant or threatened by a focused person attempt to turn his strength into a weakness and thus use the term 'tunnel vision,' which seems to have negative connotations, while optimists see this focus and determination as a virtue and affirmation of life. Setting that aside, three critical questions arise which shall frame this discussion. First, what is tunnel vision? Second, are INTJs psychologically predisposed to tunnel vision? Third, have you had any experience with tunnel vision (either in yourself, another, or both)? Finally, what are some of the strengths and limitations to tunnel vision? For those of you that find these questions too restricting, please speak freely as I'm sure readers would appreciate something of greater value that is sightly outside the box, then something mediocre inside it.