Trung Phan Profile picture
Mar 17, 2023 14 tweets 6 min read Read on X
Been looking at the most expensive real-life film stunts ever.

Here are 9 wild ones.

1. MATRIX RELOADED (2003)

For this chase sequence, a fake highway was built at a dis-used naval base in California. The 1.3 mile loop highway cost $2.5m and was fenced by a 19ft wall.
2. CLIFFHANGER (1993)

Stuntman Simon Crane used a zip-wire to cross between two planes while 15,000 feet in the air (and both planes had to travel at exactly 150mph).

He wore two concealed parachutes and was paid $1m for this insane stunt.
3. DARK KNIGHT RISES (2012)

The scene was filmed in Scottish Highlands and got government sign-off to drop a plane fuselage into the mountains.

The plane was bought from a bankrupt airline and the film’s crew of 200 spent 2 months on the stunt (generating >$1m for the region).
4. BEN-HUR (1959)

The 10-min chariot race scene is reported to cost $1m ($10m inflation adjusted).

It took 1000 people a year to carve the arena out of a rock quarry. There were 10k+ extra, 80 horses and 200 miles of racing. Miraculously, there were no serious injuries.
5. SPEED II (1997)

The Speed sequel is awful. Somehow, the filmmakers convinced the studio to pay $25m to build a seaside town (~1/4th if the budget)

The town is destroyed by a runaway cruise ship (Why didn’t Keanu Reeves do the sequel? He said the script sucked. Genius).
6. SAVING PRIVATE RYAN (1998)

The 23-minute long D-Day landing scene cost $12m to recreate (~1/5th of the film’s entire budget).

It took a month to film the scene and included 1,500 actors and 400 crew.
7. MI: GHOST PROTOCOL (2011)

Tom Cruise famously climbed the outside of the world’s largest building: the Burj Khalifa in Dubai (2,722 feet high)

The stunt take place around 80% of that height. And it’s among Cruise’s most expensive stunts because of the cost to insure him.
8. IRON-MAN (2013)

Iron-Man saves the President and passengers after Air Force One takes a hit.

The scene includes special FX, but real-life stunts cost 7-figures. Why? The falling passengers are 13 members of Red Bull parachuting team (they did 580 jumps over one month).
9. INTERSTELLAR (2014)

While this isn’t actually that expensive, it’s my favorite film expenditure ever.

Christopher Nolan spent $100k to plant 500 real acres of corn in Alberta. After filming, he sold the crop for profit.
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FYI: If you’re like me and consume a ton of content, check out my AI-powered research app Bearly.AI with:

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For a very long time, I thought this was how The Matrix did bullet time (but is a parody from music video):
One more: Cameron Crowe and Tom Cruise spent $1 million to empty out Times Square for 3 hours to film a dream sequence in 2001’s “Vanilla Sky”.
Awesome explainer vid on Matrix Reloaded highway (via Nerdstalgic)

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More from @TrungTPhan

Mar 12
McKinsey built an AI chatbot (Lilli) trained on 100 years of its work 100k documents and interviews.

70% of 45k employees use the tool, making 500k prompts a month.

A research firm hacked into it with “full read and write access to production database” including “47m chat messages about strategy, M&A, client engagement, all in plain text along with 728k containing confidential client data, 57k user accounts, and 95 system prompts controlling AI’s behaviour.”

Mcksinsey said it has patched up the vulnerability, which was made possible by “publicly exposed API documentation, including 22 endpoints that didn't require authentication…one of these wrote user search queries, and the agent found that the JSON keys (these are the field names) were concatenated into SQL and vulnerable to SQL injection.”Image
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Full read here: theregister.com/2026/03/09/mck…

Mckisney going all in on Lilli! x.com/bearlyai/statu…
Need to know how Lilli uses that time Mckinsey told AT&T in 1980 that mobile market by 2000 would be “niche” and only have 900k users (900k users added a day). Ended up costing $12 B to acquire cellular play.

Wrote that and 🐐 worst tech predictions here: readtrung.com/p/the-worst-te…
Read 4 tweets
Feb 23
these 5 paragraphs wiped ~$100B in market cap across credit card stocks (Visa, Mastercard, American Express, Capital One)…okie dokie Image
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Read 4 tweets
Jan 25
This timelapse of Alex Honnold’s 1 hour 35 minute free solo climb of Taipei 101 is unreal.

He said the main challenge was “not getting complacent up the bamboo boxes, because it’s 64 of the same sequence over and over.”

His music playlist (mostly Tool) helped because each bamboo box took about the length of a song and he could keep pace.

Honnold wants to climb other mega skyscrapers if allowed.

Thinks Taipei 101 was the ideal challenge, though: “This one is so perfect for climbing. There are some buildings that are almost too easy for climbing. Like, ones that have a window washing track on the outside, where you’re just hand over handing on some track the whole way. You can climb it, but it’s not a challenge. The thing about Taipei 101 is it’s perfectly in the sweet spot for me, where it’s possible, and it’s not too insanely hard.”

***

Post-climb intervie with Variety: variety.com/2026/tv/news/a…

Timelapse: reddit.com/r/nextfuckingl…
Honnold says the scariest parts were the dragons:

“The dragons, they’re also probably the scariest thing to actually do. I mean, they’re really fun, they’re really cool. It’s an incredible sequence, cool position. But every time I set up on the dragon, I’d be like, “this is kind of crazy.” You’re like, out over the abyss. It’s cool.”Image
Image
Read 4 tweets
Jan 16
Matt Damon and Ben Affleck on Rogan taking about how Netflix has changed filmmaking.

A major considerations is dealing with distracted viewers. To keep them tuned in, “you re-iterate the plot 3-4x in the dialogue because people are on their phones.”

Then, in action films, you change the ordering of climatic fights.

In traditional action films, you’d have “three set pieces” in every act (I, II, III) and each would “ramp up” (spend the big money on third set piece).

But streaming has to hook viewers within 5 minute, so the incentive is to put a major battle or action sequence much earlier.

Also, the directors have less incentive to make a film look great because so many people watch on laptops and phones.

They do say that streaming allows for more bets on risky projects since the theatre economics are geared towards IP, sequels and super-heroes.

Example: an independent film with a $25m budget would spend $25m on marketing (1:1 ratio). But since it splits box office with the theatre, the film needs to make $100m (1/2 of which is $50m) just to break even.

They’re realistic about the state of film and call it a supply-demand issue. If the demand is for at-home viewing (eg. Netflix 300m+ subs), then filmmaking approach will change to feed the algo.

When there’s demand for theatre, Damon will go team up with Christopher Nolan to make “The Odyssey”.
A similar dynamic is happening to streaming TV shows. The incentives for story arc, dialogue and character types warped thr medium.

I explain it more here: readtrung.com/p/the-case-aga…
Damon cooks.

Here is full Rogan: youtu.be/AVEZBy1uAk8?si…

Here is Hot Ones: youtu.be/yaXma6K9mzo?si… x.com/trungtphan/sta…
Read 4 tweets
Jan 15
The Economist has a great piece on strategy sportsbetting apps use to throttle smart bettors:

▫️Skilled players are “sharps” and given “stake restrictions” if they play too well (bets are capped).

▫️Rest of players called “Square”.

▫️In 2025, 4.3% of active UK accounts had a “stake factor” below the maximum bet allowance of 100%.

▫️Sportsbook will take bets with a profit margin as low as 4.5%.

▫️If they are able to do good “player-profiling” and keep the “sharps” from playing, the profit margin can reach 10-20%.

▫️As important as keeping out “sharps” is hooking “whales”, the deep-pocketed players that are willing to keep playing (and losing) large sums.

▫️Some “whales” are actually “sharps” in disguise, though. They’ll lose a bunch of bets to lull the sportsbook then put down a massive bet when they have an edge.

▫️While there is a risk of a “whale” being a “sharp”, the value of a real “whale” is so high that sportsbook will take the risk

▫️“In March 2024 PointsBet, raised its share of online sports-gambling revenue in New Jersey from 11% to 24% after wooing a single cash-spouting customer away from DraftKings.” (I can confirm that this wasn’t me).

▫️How sportsbook profile players:

> Playing on Mobile is a good sign (where majority of people play)
> Playing on PCs is a bad sign (it’s easier to compare odds and run models)
> E-wallets are a red flag (sportsbooks prefer debit direct deposit that can attach a player to a single account; e-wallet is more anonymized and players can move cash between sportsbook more quickly to shop for the best odds)
> Women bettors are a red flag (most bettors are men and “sharps” often use women to place bets)

▫️First wagers are a major tells (typical bettors go after top leagues — NFL, NBA, EPL — and do so near the start of the game).

▫️Popular bets for “squares”: who will win, scoring margins and how star player will perform (also, they love multi-leg parlays).

▫️“Sharps” go after less popular leagues and place bets as soon as odds are published, when they are most mispriced. They also go after less popular bets such as “pts in Q3” or stats from a random player (“Sharps” rarely do parlays and don’t withdrawal winnings often).

▫️One gambling consultant tells The Economist that “By the time a customer places his first bet, [sportsbooks] are 80-90% certain they know the lifetime value of the account.”

▫️”Sportsbooks look at a player’s ‘closing-line value’ — a measure that compares the odds at which he bets with those available right before a match begins. If it is consistently ahead of the market over his first ten wagers, he is highly likely to beat the book in the long run.”

▫️Sportsbook mathematically monitor players and creates a new risk score every 6-8 hours (risk score = estimate of probability that customers will wind up unprofitable).

▫️E-wallet users, women and bets over $100 are flagged. These suspicious bettors are given 30% of maximum bet (and proven sharps only allowed 1%).

▫️High-skilled players will often get a “beard” to bet on their behalf. Most sportsbooks ban this practice but it is widespread.

▫️Safest “beards” are close friends and relatives because you can mostly rely on them to pay out any winnings. The “beards” try to look like degens (playing at 3am, bet non-stop and doing ridiculous parlays) before placing a winning bet.

▫️The most effective strategy for “sharps” is “whale-flipping”. Find a losing gambler, then ask to put a (likely) large winning bet amongst their pool of guaranteed losers.

▫️Once “sharps” max out the people they can use as “beards”, they tap professional networks called “movers”. These “movers” employ a bunch of “mules” who can put down bets on the behalf of the network. Low-end movers charge 10-20% while high-end movers charge 50% of winnings.

***

Lots other great details here: economist.com/christmas-spec…Image
On a related note, I wrote on how slot machines make $10B+ a year in Las Vegas (~70% of all casino gaming revenue).

The history, psychology and design of the device…which went from a throwaway game to the industry’s “cash cow” and “gambling’s crack cocaine.”readtrung.com/p/the-ludicrou…
Read 4 tweets
Nov 19, 2025
Satya Nadella on why Microsoft Excel has been so durable after 40 years:

> the power of lists and tables
> the malleability of the software (“a blinking canvas”)
> spreadsheet software is Turing complete (“I can make it do everything”)
> it’s the world’s most approachable programming environment (“you get into it without even thinking your programming”)
fantastic pod ep: Image
Read 4 tweets

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