Study: facts don't get much say

This phenomenon must be why it's so unproductive to argue about controversial facts.

An alternative way of looking at this is that it's a natural defense against disinformation. If people's different perspectives suddenly vanished as soon as all information sources agreed, we'd miss opportunities for local adaptation and disruptive innovation.

Calculating position of the sun

I'm studying permaculture design. Its goal is to set up virtuous, sustainable ecological cycles that work to the benefit of everyone. One of the basic pieces of information that's needed is direction of the sun during the course of the year.

I'd looked at this before and eventually figured it out, but Vladimir Agafonkin has given the world a wonderful site called SunCalc that overlays sunlight information on a Google map.

For an example, here's a nearby park at noon this past vernal equinox.

With the use of that plus this shadow length calculator, I was able to figure out a lot about sunlight and shade on my property.

Teenagers deleting all but their latest post on Facebook

I'd seen this before and wanted to save it:

Risk Reduction Strategies on Facebook

It describes some interesting online behavior in teenagers and other groups, including:

  • deactivating their accounts as a kind of "super-logoff" (putting the user in control of their online interactions)
  • deleting posts and comments as a kind of "inbox zero" that limits the exposed surface area (averting jealousy and various kinds of attacks)
With this it's important to note that on Facebook, as in many places, the delete functionality doesn't mean the data isn't kept. What interests me is that these teens had further reasons for their cautious actions.