Pass/Fail Grading as Default

[Expertium]

@sorata

Now the point is, when I look at the survey it seems a third of all 4 button participants are sure of their inconsistency! And some do not even know whether they are inconsistent or not. This was exactly the point brought up by trashmoder.

I kinda came to agree with sorata. Even if using four buttons and two buttons results in the same RMSE in an ideal scenario where everyone is consistent, the survey clearly shows that people aren’t very consistent.