May 7, 2018
(I just went to a supermarket and wanted to share some thoughts. The decision theory stuff will be elementary. Here is a LW FAQ on decision theory if you actually want to learn the basics.)
Today I had a class on repeated games, and went shopping by myself.
Usually when I grocery shop with someone, there is a high probability we will end up having an argument.
Behind the debate on what kind of yogurt to buy, there is a real issue: misaligned values.
I believe understanding what we each value can help to better communicate on what matters. More importantly, it might bring better decisions.
I used to spend hours in supermarkets, thinking about how to optimize my cart because I did not have an accurate model of my own utility function.
Today, I ended up listing the factors which mattered the most to me:
Some useful ideas about the above criteria:
Take time into account in your decisions. A simple heuristic can go a long way:“if I save less than a dollar, I should spend less than 3 minutes on optimisation (Assuming a wage of $20/hr for the value of your time)”.
Second, you might want to consider the whole process as a coalition formation inside your cart.
Third, write out your factors. You know what matters to you. Knowing how it matters is called instrumental rationality.
This is the 10th post of a series of daily LessWrong posts I started on April 28th.
Next post: Applied Coalition Formation
Previous post: Beliefs: A Structural Change
EDIT: incorporated Elo's suggestions and changed underline to bold