Can you please explain that. If your augmenting skill is 55%, you have 3% of having a bonus of 50%, 8% (11-3) of getting a bonus of 30%, 44% (55-11) of getting a bonus of 20%, 43% (45-2) of getting a malus of 20% and 2% of getting a malus of 50%, whatever the value of the augmented skill. So augmenting a 90% skill with a 55% skill, in 3% of the case, your augmented skill will be 140% (90+50), in 8%, it will have a value of 120% (90+30), in 44% of the case, the value will be 110%, in 43% of the case, it will be 70% and in 2% of the case, the value will be 40%, giving an average of ((3*140)+(8*120)+(44*110)+(43*70)+(2*40))/100=93.1, which is above 90.