The last item on our before takeoff checklist, to be completed when the aircraft is lined up on the runway...
Configuration check
Flaps/slats.....set
Speedbrake lever...forward
Stab trim.....takeoff range
Compasses.... compared (and agree with the desired runway)
Do this, and an attempted takeoff without having the aircraft properly configured, is highly unlikely.
So far as I know, there was only one airline that incorporated a
configuration check as the last item...PanAmerican.
Tristar (That was a lovely airplane)
It still is...