True, you have a 50/50 chance of getting it right, but 'guess-ology' where the braking system is concerned is very irresponsible.
Waad saxsan tahay, 50/50 ayaa ah kan ugu jaban waxaad heli karto, hase yeeshee waxaa jira isku -darka "caafimaad qaba" oo si fiican u shaqeeya inta ay shaqeynayaan.