GEN Z ENDS IN 2012 BECAUSE THEY'RE THE LAST WHO CAN REMEMBER THE PRE-COVID WORLD; GEN Z ENDS IN 2010 BECAUSE THEY'RE THE LAST TO ENTER HIGH SCHOOL BEFORE AI WENT MAINSTREAM; GEN Z ENDS IN 2011 BECAUSE THEY'RE THE LAST TO SPEND THEIR PEAK CHILDHOOD BEFORE IPAD SALES PEAKED; GEN Z ENDS IN 2009 BECAUSE THEY'RE THE LAST TO SPEND THEIR PEAK CHILDHOOD BEFORE SMART DEVICE SALES PEAKED