Repetition, Echo, whatever...
In the Marines we had DRILL instructors, they DRILLED it into your head until it became automatic.
Constantly review the process, when you make corrections you drill on the new order of things.
Basic safety never changes... So it's pointless to waste time/effort arguing against it.
Drill again, safety glasses at all times, no LEFT OPEN powder/primers, one type of powder/primers on the bench at a time, keep your fingers out of linkage and out from between case/dies...
Don't prime looking down into the case!
I had a guy just melt down because I had a little butane torch on the bench. Total meltdown.
Trigger locked, set aside with spray cans/bottles.
Not like I was using it on a powder die with a loaded dropper above!
Lit cigarette 2" from open powder is different, and stupid. Totally preventable high risk move.
Bump the powder trickler on an active load in progress and it's over.
No ignition source and a powder spill is an 'Accident', add the ignition source and it's a total bone head disaster.
Keep in mind there is an active thread about small pistol primers in rifle rounds (.223 if I remember) and that was totally preventable by simply double checking the load data against what's actually on the bench.
Probably would have been preventable if pistol & rifle primers were separated in different containers.
While the 'Oops' threads pile up,people still scoff at basic bench safety. Counter productive...
DRILL on it until people get the message!