In 1973, Stanford psychologist David Rosenhan ran one of the boldest experiments in history.

He sent 8 healthy people into psychiatric hospitals to see if doctors could tell they were sane.

Not one was detected...

What he found exposed psychiatry's darkest secret: Rosenhan was a Stanford psychologist who posed radical question:

"Could psychiatrists tell if someone was actually insane?"

To find out, he did something unthinkable...

A “razor” is a rule of thumb that simplifies decision-making.

All geniuses of the world use razors constantly.

The 5 most powerful razors I’ve found:

(explained in 60 seconds)
1.  Chesterton’s Fence

“Do not remove a fence until you know why it was erected.”

G.K. Chesterton warned against dismantling systems without understanding their original purpose.

A company abolishing “outdated” weekly meetings might later discover they prevented departmental silos.

This principle advocates humility: assume historical solutions addressed real problems, even if their rationale is no longer obvious.

A “razor” is a rule of thumb that simplifies decision-making.

All geniuses of the world use razors constantly.

The 9 most powerful razors I’ve found:

(explained in two minutes) 1.  Sagan’s Standard

Extraordinary claims demand evidence scaled to their improbability.

When confronted with claims like "crystals cure cancer" the burden of proof lies not in dismissing them outright, but in requiring replicable data from controlled studies.

Did you know that saying "thank you" can physically restructure your brain?

Scientists discovered that 2 minutes of gratitude practice impacts your brain more than 1 hour of therapy.

The neuroscience behind this is mind-blowing... 🧵 Inside your brain, gratitude activates multiple regions simultaneously:

• Prefrontal cortex (your moral compass)
• Ventral tegmental area (reward center)
• Hypothalamus (emotional regulation)

These areas work together to create lasting change...

8 Principles About How The Human Mind Works:

(so you can master yourself for a better tomorrow) The Status Quo Principle

People tend to maintain their current behavior unless there’s either decreased friction or increased motivation. To change habits effectively, focus on:

•Reducing obstacles to desired behaviors
•Increasing motivation through immediate rewards

The most fascinating thing about being human:

Those feelings we can't put into words;
what's lost in translation from thoughts to words.

That's the invisible threads connecting all our experiences, yet we struggle to name them.

Here are 12 concepts that finally explain them: Novalunosis — The state of relaxation and wonderment while gazing upon the stars at night.

Relatable?

Here's why your brain "shuts off" when you see your crush or have an important test:

(thread) 1/ The test

The problem with the test: you perceive it as a threat.

Not because something's wrong with you. It's just how we're wired.

It's a threat because: in our evolutionary past, social standing directly impacted survival and reproduction chances.

23 Emotions people feel, but can't explain:

1/ Occhiolism: The awareness of the smallness of your perspective. 2/ Opia: The ambiguous intensity of looking someone in the eye, which can feel simultaneously invasive and vulnerable.

In 1998, a controversial book revealed the hidden psychology of power.

26 years later, it's still banned in US prisons.

Why? Because these 48 laws expose human nature's flaws (and how to manipulate them).

I studied all of them. Here's the complete guide: 1. Never Outshine the Master

Make those above you feel comfortably superior. Hide your talents when necessary to avoid threatening others in higher positions.

4 Reasons Why Stupidity Is Power:

(no. 4 is hilarious, yet so true) 1) People don't expect much of you

"Appear weak when you are strong" — Sun Tzu

Appearing weaker than you are can be a strategic advantage as others' expectations will likely be less than you're capable of.

Similarly, this applies to appearing dumber than you are.