Once their mind has been made up, confirmation bias sets in. Confirmation bias is simply our tendency to more readily, and with less scrutiny, accept information, anecdotes, and world views that confirm our existing beliefs. And, again, it is a completely normal thing that every person does. Indeed, trying to convince someone that a previously held belief is incorrect has been proven to actually increase their affinity for that idea. And so a community is born, and the safety of vaccines is called into question. And once the procedure for getting a vaccine goes from the doctor telling you that it is now time for a vaccine — and 99% of parents agreeing because that person went through medical school — to it being a question to ponder, vaccination rates will go down.
A remix of Mr. Rogers by Symphony of Science. Play this for everybody. Everybody.
In zoology, deep-sea gigantism, also known as abyssal gigantism, is the tendency for species of crustaceans, invertebrates and other deep-sea-dwelling animals to display a larger size than their shallow-water counterparts.
The Giant Isopod (read: A Roly Poly, the size of a football) is a crustacean that shows the effects of deep-sea gigantism.