Aren't the emerging two groups each others control group? What could you gain from your proposed control experiment?

That article, as written in Vanity Fair, is so poorly written. Paragraph one is evidence enough. More indefinite modifiers so that you don't know who is who. Also I don't understand why answer 1 is the correct answer regarding Linda. There is simply not enough information given to determine which answer is true.

Regarding the Linda the Bank Teller Question: Here is an analogous numbers only probability question:

You are told that the test administrator is thinking of a number between 1 and 100, and that the number is odd. What is more likely?

A. The number is greater than 50. B. The number is greater than 50 and ends with a 3, 5, 7 or 9

Answer A and you have a 50% chance of being correct. Answer B and you only have a 40% chance of being correct.