The Overtones
The Overton Window is a hypothesis describing the relationship between common public opinion and the chances of success of any new political policies.
See image below.
By way of example, in 1970 the culling of the greyhound industry because greyhounds were being culled in the interest of pace would have fallen into the unthinkable bracket.
However in 2016 it falls somewhere between the sensible and acceptable bracket.
However, there is something that Overton missed. These brackets represent the median of public opinion.
Also important is the spread around the median. The larger this is, the more careful politicians should be in proposing changes.
The power of motivated vocal minorities has been supercharged with the internet, after all.
So I’d like propose an addition to the Overton Window based on 6 Sigma thinking.
If 0.3% of the population or less of the population lie outside the 6 Sigma distribution in regards to an issue then you’re dealing with a standard Gaussian distribution of opinions on a subject; so knock yourself out and propose the changes to policy that all the fuckwits think they want.
However if polling suggests that more than 0.3% of the population are out past the 6 Sigma lines then do nothing apart from sounding very concerned, proposing the odd committee to look into the issue, and blame the opposition for opposing any changes.

At the beginning of the year my son asked: “Do you think Milo Yiannopoulos actually believes the things he says, or is he just trolling?” After a bit of discussion we decided it was probably a third option, and he is deliberately trying to push the edge of the Overton Window. I find I often do this myself: when I have no real chance of persuading someone else in a discussion, I will adopt an extreme caricature of my real position rather than moderating it in the other person’s direction, in order to broaden the range of positions they are exposed to and incrementally (Insha’Allah) expand the range of acceptable discourse.