The left digit bias

the idea that $7.99 seems cheaper than $8, even though $8 is only negligibly different than $8.01

is about more than just pricing

patients who were slightly over the age of 40 were almost 10% more likely to be tested for a heart attack than those just under 40. The difference shows up as a discontinuity, a jump up in the probability of being tested as patients cross their 40th birthday

The first digit in a number might matter more than all the rest

A car with 39,990 miles on the odometer sells for more than a car with 40,005 miles


Finished reading: Demon Days Treasury Edition by Peach Momoko 📚


Instacart is an advertising platform that dabbles in grocery delivery, just in time for the Retail Media Renaissance

From Bloomberg:

Instacart will show advertisements on the high-tech shopping carts [which include self-checkout and are equipped with cameras and sensors to detect items] it sells to grocery stores

& a Google Shopping Ads partnership:

powered by Instacart’s first-party retail media data and closed-loop insights, to reach high-intent consumers searching on Google and get their products into consumers' hands in as fast as an hour.


Finished reading: Another Brooklyn by Jacqueline Woodson 📚


Tom Asacker on “measure twice, cut once”

That’s great advice if you’re dealing with a static plan, like building a staircase, but terrible advice for dealing with the dynamic world. Instead, find a problem that needs fixing, or an idea or cause that inspires you, and just start cutting.

The best part about digital marketing is that you don’t need everything buttoned up perfectly before you can go live.

Launch, learn, test, adapt.

Measure before you start, but don’t get caught up trying to cut at the precise length. Just start hacking away.