Money or currency is a way to represent value

It is a medium of exchange

Could your boss pay you in cows? Could you take those cows and trade them for a car? Yes but this would be difficult.

So if your boss gave you a cow voucher “money” and you could trade that for a car, then you wouldn’t have to lug the cows around.

It facilitates trade

Why a US dollar, or another currency, has value is a whole other question

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What’s the tariff on something made in international waters?

You hate standard time

DST moves the sun an hour later in the day

Walmart spent millions on rfid trying to do this. Howevera cart full of razor blades would always not read something so they gave up.

My point was Walmart, Sam’s parent company, spent millions and carried it out in their other store. I don’t know if it’s rfid, but I’m sure their research in it overlapped with the way they implemented it in Sam’s.

My Sam’s Club has two big arch camera things that scan your items as you walk past. Person at door that normally scans ~3 items and receipt, just waves and says “You’re good to go!”. Been like this for months.

Scan and go is amazing.

The arch is kind of cool but they just had to scan ~3 things manually before so it’s not that game changing. But nice.

Sam’s Club, owned by Walmart, does this basically.

You scan items with your phone, check out, then walk under this arch camera things to leave, I haven’t been stopped to be manually checked in ages.