Dunning–Kruger Effect
There really is no reason for me to talk about this, I am definitely confident that everyone in the world is already an expert on this topic; I would just be wasting everyone's time by adding more stuff to this discussion. It has already been proven that we all know everything there is to know about the "Kruger-Dunning Effect"; thus, this conclusion goes without saying.
Vaccine Freedom
For millions of years nature has evolved living beings by a certain mechanism. As far as resistance to microbial attack, living beings relied on active and passive ways of dealing with harmful bacteria and virus. Then, someone thought to take a more proactive approach and developed vaccination.
Science analyzed vaccination and deemed it scientific; thus many vaccines were created over the years, and the quality of vaccines improves from one year to the next (see flu vaccines).
Nowadays, a portion of the population wants to revert to the old ways of fighting against harmful microbial attacks. I say let them; but, the people that still want to use modern ways of doing this should be allowed to do so, as well.
What this means is that the only way forward is segregation; the children that use vaccines should be separated from the children that don't use vaccines.
Let nature and freedom of choice do what they have always done.
Pollution
China makes industrial pollution and sells the products of that to become the biggest economic power in the world; USA makes agricultural pollution and sells the products of that to remain the biggest economic power in the world; and everyone makes weapons of war pollution to improve their economic power on the regional level and on the world stage.
Depression is the part of your life where all the illusions you had about existence come crashing down, all the fairy tales that kept you warm throughout your childhood, all those get shaken hard when you are depressed; and if you don't shake them off of you, you'll fall into madness, you will lose all contact with actual existence, and that is followed swiftly by the descent into depravity.
Depending on how strong you are, and how strong the friendships in your life are, you get over your depression faster or slower, or you never get over it at all. Some people get broken by depression, never recover from it, they only keep on living by drowning themselves in drugs, the cowards call these medication; some people emerge better, wiser, having achieved a distilled undestranding of existence, they see the world in a way that is much closer to the truth than at any previous time in their lives.
Before Henry Ford, Humanity was a bunch of horse shit shovellers; after Henry Ford, Humanity is a bunch of green house gas farters.