Changing for the sake of change is usually to be avoided. But it's true that if you can identify problems and rectify them, usually you will go forward, and Formula 1 has been pretty much the same for as long as I have been involved in it.
You have practice, then qualifying, and if all goes to plan the fastest driver ends up at the front. Then in the race, to nobody's great surprise, when you put the quickest car and driver combination at the front, they rush off into the lead and win.
There was a time when reliability was a major factor, and there was always the risk that at any moment a driver in the lead would pull over with a plume of smoke coming out of the car. But even with these highly complex engines, reliability has never been better. This means a fluke result or two during the season is a distant memory. So much so that since the start of 2016 we've had only five podium finishes for teams outside the privileged circle of Mercedes, Ferrari and Red Bull.