Lots of people have a list when they do grocery shopping. You follow your list, which comprises of things in random order as you write. You run around aisle from aisle. Alternatively, there're iPhone apps that sort your items by their locations.
But what role does a supermarket play in reminding or recommending relevant items? Say, you bought some bread, there's a little card next to loaves of bread that suggest (as a friendly reminder too!) butter, or cheese (who doesn't love cheese on toast?!).
We already see similar practices on sites like Amazon, when you are prompted suggestions of addition purchases – related based on taste but nonetheless completely independent items. In a supermarket however, suggestions are more to compliment your recipes. So the card next to boxes of breadsticks could be parma ham, in case your usual is dip in olive oil and vinegar. The recommendation changes from time to time, as the objective is to spice up your routines.
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