The about captures the expected systematic winning part, as you are considering the model of winning, not necessarily the accidental winning itself. It limits the scope to the winning only, leaving only the secondary roles for parry, hit, spring, strike or touch. Being a study about the real thing, rationality employs a set of tricks that allow to work it, in special cases and at coarse levels of detail. Being about the real thing, rationality aims to give the means for actually winning.
Rationality is about winning.
The about captures the expected systematic winning part, as you are considering the model of winning, not necessarily the accidental winning itself. It limits the scope to the winning only, leaving only the secondary roles for parry, hit, spring, strike or touch. Being a study about the real thing, rationality employs a set of tricks that allow to work it, in special cases and at coarse levels of detail. Being about the real thing, rationality aims to give the means for actually winning.