from research import *
s=begin(992,'Selection differs from chronological composition','What changes when two factors act sequentially on the whole duration?',{},['C991'])
nested=1+F(3,13)*(P-1);sequential=P*J
finish(s,{'nested_selection_factor':nested,'whole_duration_P_then_J':sequential,'general_law':'A_g(A_f(k))=A_(gf)(k)'},'Nested selection gives J; applying P and J successively gives their product7000/6877. These are different operations despite sharing the same factor names.','Prove when a component conversion can pass through coarsening without losing its meaning.',{'different':nested!=sequential,'values':nested==J and sequential==F(7000,6877)})