

jt512





Aug 22, 2002, 1:51 AM

Post #24 of 26 (20869 views)

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Registered: Apr 12, 2001

Posts: 21904



What's the difference between 5.10a and 5.10b? [ In reply to ]

Report this Post (0 ratings) Average:(0 ratings) Can't Post Quote:I wish I knew why you were asking this, but it seems to me that good climbers were establishing routes and could not agree on the rating, so they said "this is too hard to be a 5.10 but it does not feel quite hard enough to be a 5.11" so they added the alphabetical part to the rating as well.



No, that is completely wrong. The letter sub-grades were added when "5.10" was the highest rating. At that time, the range of difficulty of climbs given the 5.10 rating was felt to be too wide, so letters were added to better differentiate among 5.10s of different levels of difficulty. As the top end of the scale extended to 5.11 and beyond, the subgrading system was maintained for consistency.



Quote:It does not seem like a question that needs a degree in calculus to answer.



Well, you're right about that. It only requires knowledge of logistic regression.



-Jay

