Charlie Munger said "show me the incentive and I will show you the outcome."

A great way to learn this lessons: look at poorly-designed rules (AKA bad incentives) that had unintended consequences.

Here are 10 examples 🧵
For years, Domino's Pizza had this famous promotion: delivery within 30 mins OR the pizza was FREE.

Delivery drivers often sped to make the deadline and caused a number of accidents.

One crash victim sued Domino's and was awarded $79m. The chain shut the promotion down.
English law in Wales set the death penalty for stealing a sheep.

Beastiality was a lesser penalty, so Welshmen caught stealing sheep claimed they planned to make love to the animals.

As a result, Welshmen were given the nickname "sheep shaggers".
In Athens (late 80s), the government tried to limit pollution by having odd-numbered and even-numbered license plates drive on alternating days.

Result: rich folk bought a second (shittier + worse emission) car as a backup. Streets stayed clogged, pollution got worse.
Employees at one company were getting a bit liberal with lunch time, so their boss made everyone text when they started and ended lunch.

One dude started texting every detail: start time, order, price, address, end time, random emotions.

They cancelled the policy.
Alcohol bans at college football games led to increased intoxication problems because fans were getting really really drunk before entering the stadium.
In Alberta, strip club patrons must keep a 2m buffer from dancers. The only currency that travel that far are metal $1/$2 coins ("loonie","two-onie"):

"The goal was to protect the safety & dignity of dancers but they were reduced to fleshy coin targets”
In the Soviet Union, steel producers were rewarded by the total weight output of the factory.

This led to production of oversized and un-usable strips of steels. End users had no choice but to take the impractical strip sizes and machine them down, thus wasting steel.
Windsor, Ontario switched to LED lights for traffic signals to save on electricity.

LED's burn cool so -- in the winter -- snow and ice don't melt off like it does on electric lights.

This led to car accidents and additional expenses for work crews to clean the lights.
Classic example from "Freakanomics":

An after-school centre started fining parents that picked their kids up too late.

More parents started picking their kids up late as the fine was now seen as a "fee for services".
The entire genre of "rules that had unintended consequences" is known as "The Cobra Effect".

Under colonial rule, villagers in India were paid a bounty to capture cobras. People started breeding cobras so they could kill them and collect rewards.
I write threads breaking down tech and business 1-2x a week.

Follow @TrungTPhan to catch them in your feed.

Here's another one you might like:
Also check out my Saturday newsletter for other interesting content right to your inbox: trungphan.substack.com
The Prohibition deserves its own thread for "unintended consequences":

🔗 quora.com/What-laws-tota…
One more: After Titanic accident (1912), the US government made a law requiring that boats have lifeboats for 75% of passengers.

Legislators warned that Great Lakes vessels couldn't handle the extra weight.

One boat (SS Eastland) flipped in Chicago River, killing 850 people.

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Trung Phan 🇨🇦

Trung Phan 🇨🇦 Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @TrungTPhan

22 Nov
Elon’s Yelp review of JPMorgan is lit
People, this is parody. But if it made you laugh, you’ll love my Saturday newsletter: trungphan.substack.com
However, I did find these hilarious reviews posted on Yelp today

🔗 yelp.to/JQoFMbU9olb
Read 4 tweets
21 Nov
Been writing threads on how the world's largest companies (eg. Apple, Ikea, Starbucks) use psychological hacks to get people to spend money.

Here are 10 deep dives 🧵
Read 13 tweets
18 Nov
"The Psychology of Money" by Morgan Housel is the book I've re-read the most in recent years.

Packed with insights on investing, mindset and our relationship with money. Very valuable with the current pace of markets.

Here are 8 takeaways 🧵
1/ For financial success, psychology is more important than smarts
2/ Ultimate prize = controlling your time
Read 14 tweets
17 Nov
In the late-1990s, Shaq was at the Beverly Hills Hotel in LA when he overheard 2 people talking about a new technology.

Turns out they were Google employees. Shaq ended up getting pre-IPO shares in the startup and it remains his best investment ever.

LESSON: Always be sourcing.
For other hard-hitting life lessons, check out my Saturday newsletter: trungphan.substack.com

More from Shaq:
Shaq, Tiger, Arnold and Henry Kissinger all in the same round lol

Think Bezos did $250k for 1% of Google around then, too.
Read 5 tweets
14 Nov
It's estimated that ~1% of the world's population eats at McDonald's every day.

McDonald's best lever to influence purchase decisions is the menu, which the $190B fast-food chain designs with many psychological hacks to boost sales.

Here are 10 of them 🧵
1/ In the mid-2010s, McDonald's sales were lagging. The brand turned around its fortunes with a multi-year menu & store redesign that:

◻️emphasized simplicity (speeding up avg. drive thru time from 400 secs to 350 secs)
◻️highlights signature items (pricier = higher margins)
2/ Here is McDonald's challenge: loyal customers love the classics (Big Mac, McChicken).

And they spend only 30 secs on the menu (getting them off default options is hard).

But McDonald's sells 2B+ meals a month, so influencing choices for a small % of customers boosts profits.
Read 19 tweets
14 Nov
For investing, I’m a big believer in long-term thinking. You can’t be swayed by day-to-day volatility.

Here’s my portfolio over a multi-decade time horizon:
FYI: This is not investment advice but you should listen to the Not Investment Advice (NIA) podcast.

🔗 podcasts.apple.com/us/podcast/ep-…
For people concerned about my portfolio, I forgot to add the "Centuries" curve
Read 5 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Thank you for your support!

Follow Us on Twitter!

:(