How long does is take for the cultural memory of a "great deception" to fade away, so you can do another one?

Do we factor in Attention Deficit Disorder for our answer? So many are distracted mentally either by handicap, mind altering controls or tainted food diets that disrupt thought processes.

I have a few people around me who haven't paid the slightest amount of attention to any of the deception. That's mind boggling!

In response Martin Geddes to his Publication

Only people mentioned by @MamaT in this post can reply

PI Pro bono for the children. Following our missing children since 2015.Anonymous no more Kelly Patton Wichita KS Gkids seized by Idaho CPS

In response Mama Tee to her Publication

and cognitive dissonance