Visualize your shopping list as a two dimensional table with columns for store, UPC, quantity and price. The price column would be nullable since price information may be unknown to the network. The store column would be nullable since a source may not be known for all items on your shopping list.

An efficient shopping list might do the following (which we'll call strategy 1):

Another example might do the following (strategy 2):

Sounds like a model of inefficiency from the perspective someone for whom you're shopping. But informationally, pubwan will be either a two way street or a dead end. One might adopt strategy 2 when shopping for oneself, specifically for things one buys often. Although some inefficient prices may be paid fetching everything on this list, it's one's own favorite items about which pubwan will have the more complete and up-to-date market information in the future. Think of the "wasted" money as a small donation to the cause of linear pricing, and freedom1 of information in general.

1Free means you don't have to pay.

Your Personality Is
Idealist (NF)

You are a passionate, caring, and unique person.
You are good at expressing yourself and sharing your ideals.

You are the most compassionate of all types and connect with others easily.
Your heart tends to rule you. You can't make decisions without considering feelings.

You seek out other empathetic people to befriend.
Truth and authenticity matters in your friendships.

In love, you give everything you have to relationships. You fall in love easily.

At work, you crave personal expression and meaning in your career.

With others, you communicate well. You can spend all night talking with someone.

As far as your looks go, you've likely taken the time to develop your own personal style.

On weekends, you like to be with others. Charity work is also a favorite pastime of yours.
The Three Question Personality Test
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