Satellite images of car parks make investors billions | Nudge Newsletter


Concrete Phrases

​Read online​


Take a look at this satellite photo. What do you see?

Most see a busy Walmart car park. But stock market investors see earnings.

RS Metrics sells daily satellite images of parking lots at 44 of the USA’s largest retailers. They photograph 67,000 locations every day (assuming no cloud cover).

To a layperson like me, this seems ridiculous. Surely there’s a better metric investors can use to gauge business success?

But investors place a high value on these images. They show a live, unfiltered view of buyer behaviour.

It’s concrete, no BS evidence. And using the car park imagery to direct your investments actually works.

One recent paper found that investing in companies with busy car parks (and shorting retailers with empty parking lots) delivers a 5% bump in earnings¹.

Concreteness

The car park imagery gives investors something concrete to base their decisions. Live satellite images are reliable; they’re concrete. And it’s that concreteness that makes them a good guide.

And concreteness doesn’t just impact investors; it affects buyers too.

In 2018², researchers showed 29,967 customers with credit card debt a payment deadline with a vague, non-concrete timeframe: ”within 3 days”.

Others saw a concrete deadline: “pay within 72 hours”.

Turns out, those who saw the concrete deadline (72 hours) were about 15.2% more likely to pay.

We have a bias for concreteness. And it’s a good bias. It allows investors to profit off car park images.

It’s a bias every marketer needs to learn. When attempting to persuade and influence, always use concreteness over vagueness.

Cheers,

​Phill​

P.S. I've just finished Alex Edmans' brilliant book The Madness of Markets, which is where I got the idea for this newsletter. Check out his book here.

As a behavioural science practitioner, I believe in the peak-end rule.

¹Katona, Z., Painter, M. O., Patatoukas, P. N., & Zeng, J. (2025). On the capital market consequences of big data: Evidence from outer space. Journal of Financial and Quantitative Analysis, 60(2), 551–579.

²Mazar, N., Mochon, D., & Ariely, D. (2018). If you are going to pay within the next 24 hours, press 1: Automatic planning prompt reduces credit card delinquency. Journal of Consumer Psychology, 28(3), 466–476.

​Tune into Nudge | Advertise with Nudge | Unsubscribe

Nudge Newsletter

I spend 18 hours each week turning marketing psychology into readable newsletters.

Read more from Nudge Newsletter
Beyond Provocative: How One AI Company's Ad Campaign Betrays Humanity -  Roger Wong

Anchoring Read online In Alex Edmans' great book The Madness of Markets, he writes about how the bookshop Computer Literacy, Inc changed its name. The store, in 1999, became Fatbrain.com. But why? What's wrong with Computer Literacy, Inc? According to Alex Edmans, it was to profit from the dot-com bubble. And it worked. Fatbrain's stock climbed 36% after the name change. A Bloomberg article about the name change. But was the Fatbrain spike in earnings a one-off? To find out, Cooper, Dimitrov...

Mere Exposure Read online In E.T., director Steven Spielberg planned a scene where the alien creature was coaxed out of hiding using sweets. Keen not to miss a profitable opportunity, Spielberg approached Mars to use M&M’s for a small fee. Mars turned Spielberg down. Undeterred, Spielberg asked Hershey’s for product placement. Hershey’s had just launched Reese’s Pieces, so they jumped at the chance to feature the new chocolates on screen. Reese’s Pieces were used to lure out the alien. After...

Deep vs Shallow Connections Read online A few weeks back, the world's best-known YouTuber (MrBeast) wrote a book with one of the world's most successful authors (James Patterson). The book is called "The Most Dangerous Games". It creates a fictionalised version of MrBeast's YouTube videos except with more death, romance, and other topics that publishers hope will keep people reading. I'd have wagered a pretty large bet that this book would succeed. James Patterson has sold 425 million books....