I looked into getting a Nectar card, saw that it only saves about 1%, and decided it wasn't worth the hassle of scanning. But then I did an actual calculation, assuming that it adds ten seconds to a shopping trip, and decided that it's an effective use of those ten seconds if I'm spending £3 or more. Now I have a Nectar card.
I didn't take into account the hassle of getting a card (a few minutes so far, I'm not sure whether I need to register it online at some point or the leaflet is just creatively written, so maybe longer), or of redeeming points (unknown) or of having an extra card in my wallet (small).
This is the public group instrumental rationality diary for the week of October 29th. It's a place to record and chat about it if you have done, or are actively doing, things like:
Or anything else interesting which you want to share, so that other people can think about it, and perhaps be inspired to take action themselves. Try to include enough details so that everyone can use each other's experiences to learn about what tends to work out, and what doesn't tend to work out.
Thanks to everyone who contributes!
Previous diary; archive of prior diaries.