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Why is it that so many people remember how blue the sky was on 9/11?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Feb 11, 2026 · Updated Apr 13, 2026

The contrast was striking – over and over again, all day long, I remember people remarking on it – this massive and horrible event, on such an especially beautiful day. And certainly in NYC, most of us didn't go to or stay at work all day, either, so that may also contribute to our noting and rem…

64
Words

1 min
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#221
of 500 in Psychology

-6%
vs Category Avg

The Short Answer

The contrast was striking – over and over again, all day long, I remember people remarking on it – this massive and horrible event, on such an especially beautiful day. And certainly in NYC, most of us didn't go to or stay at work all day, either, so that may also contribute to our noting and remembering what a "nice" day it was outside.

Analysis

Key Concepts: Contrast, striking, long

This explanation focuses on contrast, striking, long and spans 64 words across 2 sentences. The depth is typical for Psychology questions (category average: 68 words), striking a balance between accessibility and completeness.

What This Answer Covers

This is a focused, single-point answer that gets directly to the core of the question without detours.

How This Compares in Psychology

Ranked #221 of 500 Psychology questions by answer depth (top 45%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.

Frequently Asked Questions

Is there a simple explanation for why it that so many people remember how blue the sky was on 9/11?

The contrast was striking – over and over again, all day long, I remember people remarking on it – this massive and horrible event, on such an especially beautiful day. And certainly in NYC, most of us didn't go to or stay at work all day, either,…

How detailed is this explanation compared to similar Psychology questions?

This is an above-average answer at 64 words, ranked #221 of 500 Psychology questions by depth. The key concepts covered are contrast, striking, long.

What approach does this answer take to explain it that so many people remember how blue the sky was on 9/11?

The explanation uses direct explanation across 64 words. It is categorized under Psychology and addresses the question through 1 analytical lens.