Sebastien Lacan

@EPFL Engineer & Entrepreneur | Sharing finance insights 💸 & curious facts daily ⤵️

[Sebastien Lacan @Sebastoken]

@thsottiaux I think it is better without the 5-hour limit, but it is harder to know whether you are using your weekly quota too quickly.

Ideally, I would add a simple usage cursor showing where you should roughly be at that point in the week to stay within the weekly quota

[Sebastien Lacan @Sebastoken]

@francescoswiss This reminds me a video I published a few months ago

https://t.co/kYPii5uQ3Y

[Sebastien Lacan @Sebastoken]

@cryptogoos This reminds me a lot a video I published a few months ago. A mention would have been appreciated: https://t.co/kYPii5uQ3Y

[Sebastien Lacan @Sebastoken]

@MoneyRadar_FR Ça me rappelle beaucoup une vidéo que j’avais publiée il y a quelques mois: https://t.co/kYPii5uQ3Y

[Sebastien Lacan @Sebastoken]

@yasser_elsaid_ What kind of tasks are you running that take several hours?

Most of my AI workflows rarely go beyond 20 to 30 minutes

[Sebastien Lacan @Sebastoken]

@Divs_King Pas de souci
Si ça t’intéresse, je partage d’autre visuels de ce type sur IG/TikTok :
https://t.co/34SI3YUtvJ

[Sebastien Lacan @Sebastoken]

Something I find concerning about AI:

It seems unaware of the value it actually provides.

When I ask about dev time estimates, it still answers as if everything were coded manually.

Even when I point out that AI speeds things up, it doesn’t fully adjust its reasoning.

[Sebastien Lacan @Sebastoken]

@viktoroddy Design

[Sebastien Lacan @Sebastoken]

TL;DR:

If ChatGPT refuses your images, check your format.
On Mac, enabling HDR changes screenshots to HEIC.
Switch back to SDR, or export in JPEG/PNG.

[Sebastien Lacan @Sebastoken]

For 3 weeks, I thought ChatGPT was broken.
Every time I uploaded an image, it went completely off
hallucinating, answering nonsense, missing the point.

I tried everything: browser, VPN, restarts, clearing cache.
Nothing worked.

And the reason?
Was so stupid it actually hurts.

[Sebastien Lacan @Sebastoken]

Guess what?
ChatGPT can’t read HEIC files.

So yeah, I spent three weeks debugging…
because of a file format.

[Sebastien Lacan @Sebastoken]

Spent the whole day creating content.
Feels like I got nothing done, no code, no numbers, no email.

But I know it’s the right path.
Not easy for an engineer’s mind, you’ve got to switch off the logic fuse sometimes.

[Sebastien Lacan @Sebastoken]

You can’t buy back compounding.

At 8% p.a., investing $500/mo until 55:
• Alex starts at 25yo → $745K
• Sam starts at 35yo → $317K
• Chris starts at 45yo → $134K

To match Alex:
• Sam needs $1.2K/mo (×2.4)
• Chris needs $4.2K/mo (×8.4)

Start early. Time beats money.

[Sebastien Lacan @Sebastoken]

The pattern never disappeared:
•Rome: less silver
•Henry VIII: copper coins
•Modern era: printed paper, digital credits

Inflation is not new.
It’s the oldest trick in the empire’s playbook.

[Sebastien Lacan @Sebastoken]

We talk about inflation like it’s a modern problem.
But the first documented inflation happened over 2,000 years ago, long before central banks existed.

Let’s go back to Ancient Rome.

[Sebastien Lacan @Sebastoken]

As the coins lost value, prices exploded.
Wages couldn’t keep up.
Merchants stopped trusting imperial money and demanded payment in goods or gold.

Rome’s economy spiraled into chaos.