M: It is almost impossible to find a person between the ages of 85 and 90 who primarily uses the left hand.Q: Seventy...

yassmenaraim October 14, 2020

Still confused about this one

I read all the questions/answers in the discussion section but I still don't get it? Why're we assuming what M is going to say? Can you please make a video explaining this???

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Samirah January 12, 2021

I agree. It would be very helpful to have a video explaining this question.

Anna413 August 28, 2021

I find the quest stem confusing and unclear.

Michael.Stanislav June 24, 2022

Ditto. The prompt doesn't seem to be saying anything about the survivability of left-handed people versus right-handed people...

Emil-Kunkin July 6, 2022

Hi Michael,

This is a strange question stem- it is asking us what hypothesis of M's Q could be countering. While it is far from clear, I think we are being asked what Q could be preemptively arguing against.

Since Q supports the idea that the handedness disparity comes from old people being disproportionately rightie, we can conclude that Q does not think that righties are more likely to live to old age. This is another possible interpretation of the evidence that M provides, and Q's additional evidence undermines that point of view.

Note that this is a 30 year old question, and (in my view) modern question stems tend to be a bit more direct.