Raspberry Pi 3 root password

It's embarrassing that I even had to look this up, but when I did, I learned: 1) the first rule of Raspberry Pi 3 root password is you do not use a password for root, you just sudo su. 2) This is the same question from a newbie which has answer 1 in it, but then disintegrates into a hilarious neckbeard war about shell security from which many useful things can actually be learned: https://www.raspberrypi.org/forums/viewtopic.php?f=27&t=48293