- It's short and to the point
- It's actionable in the short term (make sure the tasks per session aren't too difficult) and useful for researchers in the long term
- It's informative on how these models work, informed by some of the best in the business
- It gives us a specific vector to look at, clearly defined ("coherence", or, more fun, "hot mess")
If future AI only manages to solve the variance problem, then it will have problems related to bias.
If future AI only manages to solve the bias problem, then it will have problems related to variance.
If problem X is solved, then the system that solved it won't have problem X. That's not very informative without some idea of how likely it is that X can or will be solved, and current AI is a better prior than "something will happen".