dijous, 11 de desembre del 2025
The Null Hypothesis… Why?
dimecres, 3 de desembre del 2025
Are We Decoding Our Feelings Correctly?
Trying To Put Language On A Stream Of Excited Neurons
dimecres, 19 de novembre del 2025
Big Family Anatomy
Big Family Anatomy
-Josephine: I’ve always wondered what it must be like growing up with many siblings. Not like me — I’m an only child.
diumenge, 9 de novembre del 2025
The Enigma
The Enigma
One of the clearest examples of this threshold is the 2×2 Contingency Table — a small box of logic that appears simple yet conceals a quiet labyrinth within. You can explain it slowly, carefully; your audience nods, it makes sense — until it doesn’t. Because this table, unlike a mere 1 + 1 = 2, asks for something more: a spark of abstraction, the courage to think beyond the surface. Each time you face one, you must not only see but know what you are looking for, and then — through the patient unfolding of reasoning — interpret the grid’s hidden meaning.
Those who do not play this mental game regularly may find it daunting, almost like trying to read a spell in an ancient language. It is not that the formula itself is difficult — it is that the mind must move in two dimensions at once. The table becomes an enigma.
Take, for instance, a simple example from Signal Detection Theory, in which participants must click “Y” when they perceive a signal and “N” when they do not perceive its:
| Signal Present | Signal Absent | |
| Response: “Yes” (Signal Detected) | Hit | False Alarm |
| Response: “No” (Signal Not Detected) | Miss | Correct Rejection |
And then there is another example — one that draws us deeper into the twilight of statistical reasoning: the Table of Type I and Type II Errors.
| Reality: Null True | Reality: Null False | |
| Decision: Reject H₀ | Type I Error (False Positive) | Correct (True Positive) |
| Decision: Fail to Reject H₀ | Correct (True Negative) | Type II Error (False Negative) |
Here we enter a shadowland where scientists must gamble with uncertainty. They draw a fragile boundary — traditionally at 0.05 — meaning a 5% chance of crying wolf when no wolf is truly there. Imagine a courtroom where you agree to convict an innocent person once in every twenty trials, simply because perfection is impossible and a line must be drawn somewhere in the sand.
This is the Type I Error — declaring something real when it is only a phantom. But lower that threshold too far, and you risk blindness to what genuinely exists: the Type II Error, where you miss the real signal, letting the wolf slip silently past under the moonlight.
Probabilities dance like ghosts around this 0.05 border — a delicate truce between credulity and skepticism, where truth and illusion weave into one another. To those who do not visit this realm often, its logic can feel elusive, as though the numbers hide a riddle only persistence can unlock. It is a place where no choice is perfect, only less wrong.
And that, perhaps, is the true enigma of learning. Those who embrace the mystery grow wiser; those who resist may lose the trail for good. In the end, the humble 2×2 Contingency Table is more than a pedagogical tool — it is a mirror of the human mind: two dimensions, infinite interpretations, and a quiet reminder that understanding is never given, only earned through the courage to think beyond the obvious.
dijous, 23 d’octubre del 2025
Fight-or-Flight
Body's "Fight-or-Flight" in Greenstone
dijous, 16 d’octubre del 2025
Stupid Enough to Survive
Stupid Enough to Survive
dilluns, 29 de setembre del 2025
Mistakes Paradox
Harlan Mistakes Paradox
dimarts, 9 de setembre del 2025
Switch Cost
Switch cost in Greenstone (cognitive psychology)
dimarts, 19 d’agost del 2025
... but bro, what does “Gestalt” really mean?
... but bro, what does “Gestalt” really mean?
dimecres, 13 d’agost del 2025
The Bystander Effect
The Day Inexperience Spoke Up
diumenge, 20 de juliol del 2025
Ulysses?! Really?
Ulysses?! Really?
divendres, 11 de juliol del 2025
Waiting to Be Triggered (The Easy Option)











