Purity v. Safety

    1. Cubeful 2-ply    13/8 4/1                     Eq.:  +0.1380
       0.4639 0.0566 0.0005 - 0.5361 0.0834 0.0008
        2-ply cubeful prune [world class]
    2. Cubeful 2-ply    6/1 4/1                      Eq.:  +0.1150 ( -0.0231)
       0.4626 0.0358 0.0001 - 0.5374 0.0773 0.0006
        2-ply cubeful prune [world class]
    3. Cubeful 0-ply    13/8 6/3                     Eq.:  -0.0185 ( -0.1565)
       0.4153 0.0460 0.0003 - 0.5847 0.1134 0.0008
        0-ply cubeful prune [expert]