Thanks Jim for such a nice explanation. OK i will give you a scenario and with that you can assist me.
I am going at say 70KM/h at 4th and there is a round about ahead, to cross it obviously i have to reduce speed and make it almost 40-45KM/h, after crossing the round about and get to a plain road i have two options now;

1) full throttle to shift down to 3rd and then release the pedal so it is pressed 3/4 (ECONOMY NEEDLE IS AT ECONOMY SIDE)

2) keep the throttle 1/2 and don't shift down when on road, but to accelerate from 40KM/h in 4th, the economy needle goes into red

ok now forget about econ needle, which method you prefer???