you are querying a crowd on Lemmy that is going to be biased towards programmer / engineer types that tend to function well in their world due to compulsive features often considered pathologic by others.
I feel personally attacked. :D
Edit: also to answer the question. Yes I absolutely arrange things on the checkout belt.
I group these items: Liquids. Fridge. Cans and bottles. Fruit and veg, heavier ones first so the potatoes don’t crush the berries. Frozen gear near fridge gear. Chemicals / cleaning gear separate.
I should add that I’m buying for a lot of people so the shopping trips tend to be large and there would be a full bag of most of those groupings.
Here’s my prediction for historical purposes:
That’s it. That’s my prediction based on having lived through the cold war and being interested in history.
I really fucking hope I’m wrong.