Quote History Quoted:
Finger sticking out straight alongside the trigger guard is recent. Keeping your finger off the trigger has been around forever.
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This^
My Father, who learned to shoot in the 40's, taught me in the 60's, " Don't touch the trigger until you're ready to shoot"
And My Boy Scout Master circa 1971, the old WWII Gunny; " Keep your Damn Booger hook off the trigger until you're on target!"
And the Drill Sergeants at Sand Hill in the late 70's.
ETA: Smart folks, especially experienced hunters, have always had, and taught, good trigger discipline. Here's a photo, of my Paternal Grandparents showing good trigger discipline sometime in the early 50's
Note Grandpas classic hunters carry; trigger secure from brush & branches.
Final Edit: Ma reversed the slide when she scanned it, Grandpa didn't have a left handed gun, and the steering wheel is on the wrong side....