Tuesday, September 28, 2010

how to tell if you’re wrong

from overcoming bias via marginal revolution

Signs that your opinions function more to signal loyalty and ability than to estimate truth:

  1. You find it hard to be enthusiastic for something until you know that others oppose it.
  2. You have little interest in getting clear on what exactly is the position being argued.
  3. Realizing that a topic is important and neglected doesn’t make you much interested.
  4. You have little interest in digging to bigger topics behind commonly argued topics.
  5. You are less interested in a topic when you don’t foresee being able to talk about it.
  6. You are uncomfortable taking a position near the middle of the opinion distribution.
  7. You are uncomfortable taking a position of high uncertainty about who is right.
  8. You care far more about current nearby events than similar distant or past/future events.
  9. You find it easy to conclude that those who disagree with you are insincere or stupid.
  10. You are reluctant to change your publicly stated positions in response to new info.
  11. You are reluctant to agree a rival’s claim, even if you had no prior opinion on the topic.
  12. More?

more here. Tyler Cohen adds: You feel uncomfortable taking a position which raises the status of the people you usually disagree with.

Tuesday, September 21, 2010

midnight at walmart

Bill Simon, CEO of Wal-Mart’s U.S. business:

“And you need not go further than one of our stores on midnight at the end of the month. And it’s real interesting to watch, about 11 p.m., customers start to come in and shop, fill their grocery basket with basic items, baby formula, milk, bread, eggs,and continue to shop and mill about the store until midnight, when electronic — government electronic benefits cards get activated and then the checkout starts and occurs. And our sales for those first few hours on the first of the month are substantially and significantly higher.

“And if you really think about it, the only reason somebody gets out in the middle of the night and buys baby formula is that they need it, and they’ve been waiting for it. Otherwise, we are open 24 hours — come at 5 a.m., come at 7 a.m., come at 10 a.m. But if you are there at midnight, you are there for a reason.”

more here and here...

Monday, September 6, 2010