Thanks for putting your refutation in your profile. :-)
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Rumor: Americans could not travel to Pakistan in 1981.
Truth: The U.S. Department of State issued Travel Advisory No. 81-33A for Americans traveling to Pakistan in 1981.
Before traveling to Pakistan, American Citizens should be aware of the following updated visa requirements: 30 day visas are available at Pakistani airports for tourists only. As these visas are rarely extended beyond the 30 day time per visa. Tourists planning to stay longer should secure visas before coming to Pakistan. Any traveler coming into Pakistan overland from India must, repeat must, have a valid visa, as 30 day visas are not, repeat not, issued at the overland border crossing point at Wagha.
Welcome. That particular rumor is a pet peeve of mine.