My reasoning … Mastery does not mean Strength. Strength has a limit, Mastery has no limits.
Learner trains to increase/use Strength, while the Master focuses not on strength (25-75%), but more on Timing and Place/Point.
A combination of 3 receptions is to take only the necessary part from each and to unite.
(1-x)+(1-y)+(1-z)<1+1+1, fragments of receptions weaker than each of the receptions
(1-x)(1-y)(1-z)>>>3, combination of fragments is more effective than the sum of receptions
Using less strength, timing, points of impact, but getting more efficiency.