For the two-decision-cycle SIS, the basic building block BBB can be formulated methematically as:

if timing-control(t) == 'slow' then
y(t)_solution = g_concentrate (g_eliminate (g_adapt (g_enumerate (x(t)_problem))))

else if timing-control(t) == 'quick' then
y(t)_solution = f_concentrate (f_eliminate (f_adapt (f_enumerate (x(t)_problem))))