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Questioning Knowledge Claims

Comments repeatedly challenging the source, evidence, or basis for another user's assertion or belief, often phrased as 'How do you know that?'

📉 Falling 0.5x Other
3,390
Comments
20
Years Active
5
Top Authors
#9689
Topic ID

Activity Over Time

2007
6
2008
18
2009
38
2010
53
2011
62
2012
81
2013
115
2014
112
2015
129
2016
139
2017
206
2018
208
2019
230
2020
278
2021
298
2022
352
2023
398
2024
328
2025
310
2026
29

Top Contributors

wolverine876 (16) jacquesm (10) CyberDildonics (10) mikeash (10) mistermann (9)

Keywords

possibly know know enlighten conclusion methodology really know reach question did did did know did

Sample Comments

mikeash • May 24, 2012 • View on HN

I'm curious, how do you know that?

anonlurking • Dec 26, 2018 • View on HN

Can you explain how you know that?

volida • Jan 15, 2009 • View on HN

may I ask how do you know that?

sneed-oil • Aug 15, 2022 • View on HN

How can you possibly know that?

mhb • Mar 4, 2020 • View on HN

How can you possibly know that?

bl0rg • Nov 23, 2023 • View on HN

Please enlighten me. How do you know that?

guy234 • Feb 9, 2025 • View on HN

how could you possibly know that?

jahaja • Jun 23, 2020 • View on HN

How can you possibly know this?

candre717 • Jan 2, 2011 • View on HN

Can you share how you know this?

nickphx • Mar 28, 2021 • View on HN

How could you possibly know that?