Daily dose
Cards are not copied from one shared list. The categories you picked in onboarding, plus what you save and rate, go into the choice.
Neuroscience
Sleep shelves what you learned today.
Slow-wave sleep moves a new trace off the short shelf and onto a longer one. The card tells that move, not the whole apparatus of the study.
Economics
A carbon price writes the hidden cost onto the bill.
A ton released into the air is easy to ignore when it is on nobody’s bill. A price puts that ton back inside the decision.