Memory

A couple things I read the other day in a science magazine:

- there are around 30 people in this world that have a condition where they can't feel pain. At first I thought, wow, I'm jealous. And then I realized there are actually a lot of disadvantages to not feeling pain. Pain tells us when things are wrong. They can sense touch, but no pain. Sometimes it is tempting for them as kids to show off their abilities by putting knives into themselves or jump off buildings... and sometimes they die from it.

- couples can remember more with each other than 2 people who aren't a couple. In family relationships we unofficially assign people to be the expert in certain things and we don't bother to remember those things because we know we can access that information from the other person. A shared memory system is more efficient for our brains.