The M&M test is very specific. If you see brown M&Ms, it means they didn't read the contract carefully or take the details seriously. That in turn means something important and potentially dangerous is likely to be seriously wrong. The snopes article states that experience confirms this prediction.
The "how many gas stations in the US" question is nothing like the brown M&Ms test. It is not testing anything nearly so specific, nor is it as easily confirmed by experience. At best you're taking a subjective interpretation of a creative answer and comparing it to subjective performance down the road. And even if you don't consider the inherent subjectivity, it's hard to document a reasonable number of positive and negative test cases; and even then controlling for other variables is essentially impossible.
Van Halen used the test to predict performance conditions for a specific date and venue. The gas stations answer is used to predict the behavior of a person for a significant period of time.
Comments
The M&M test is very specific. If you see brown M&Ms, it means they didn't read the contract carefully or take the details seriously. That in turn means something important and potentially dangerous is likely to be seriously wrong. The snopes article states that experience confirms this prediction.
The "how many gas stations in the US" question is nothing like the brown M&Ms test. It is not testing anything nearly so specific, nor is it as easily confirmed by experience. At best you're taking a subjective interpretation of a creative answer and comparing it to subjective performance down the road. And even if you don't consider the inherent subjectivity, it's hard to document a reasonable number of positive and negative test cases; and even then controlling for other variables is essentially impossible.
Van Halen used the test to predict performance conditions for a specific date and venue. The gas stations answer is used to predict the behavior of a person for a significant period of time.