I am convinced that many people don't read anything prior to the last page or two.
THE MD80 has a takeoff configuration warning that would alert the pilots that the flaps/slats were not set for takeoff (among other things).
The age of the plane doesn't really matter here. The DC9, which the md80 is based upon, which has flown since the 1960's has a takeoff configuration warning system.
NOW, I published earlier how the RAT probe problem may have been a SYMPTOM of a problem indicating that the takeoff configuration warning system might be compromised.
I also indicated, many,many posts ago, that most pilots have learned by now that they should also check engine power/performance by using N1, and it should easily be in the 97percent to 99 percent range for takeoff. EPR, while interesting and important can be compromised rather easily.