Labeling the amount of calories in food (for example on McDonald's restaurant menus) totally fails to change people's eating behaviors at all, no matter how hard people study it.
The effect may be too small to measure, but I can personally attest that it is at least 1 in 7.057 billion.
While my grocery shopping is strongly determined by nutritional label content, my behavior at restaurants only weakly is, and I think this is related to the fact that so few restaurants offer that service in the first place. If I'm going to a restaurant at all, I'm in the habit of taking for granted that I will only be able to guess at the nutritional content of the meal I'm ordering, and will therefore be taking a break from deciding on the basis of labeling (as an aside, I have an enormous appetite, and can eat a meal meant for three and have room for de...
Information that surprises you is interesting as it exposes where you have been miscalibrated, and allows you to correct for that.
I suspect the users of LessWrong have fairly similar beliefs, so it is probable that information that has surprised you would surprise others here, so it would be useful for them if you shared them.
Example: In a discussion with a friend recently I realised I had massively miscalibrated on the percentage of the UK population who shared my beliefs on certain subjects, in general the population was far more conservative than I had expected.
In retrospect I was assuming my own personal experience was more representative than it was, even when attempting to correct for that.