Never trust anyone under 40.

Back in the late '60s, the trendy slogan was "Never trust anyone over 30." 

But today I say: "Never trust anyone under 40." 

Never trust anyone who grew up in the Internet Age.
Never trust anyone who garners their opinions from what their made-up "friends" on Facebook or Twitter say.
Never trust anyone who has only had "relationships" via the Internet.
Never trust anyone who can't walk 20 feet to take their trash out without looking at their phone the whole time.
Never trust anyone who's never read a book.
Never trust anyone who grew up with the "social-emotional learning" teaching system instead of actual learning.
Never trust anyone who can't pronounce the letter "t" or other consonants. Example: "Mah-ha-un" for "Manhattan." Or "buh-un" for "button."
Never trust anyone who doesn't know that "an" instead of "a" comes before a word beginning with a vowel.