So for example, reddit believers largely believe in evolution. Make a comment in favour and a comment against, the former goes up while the latter goes down, and groupthink is proven. I think you need a more rigorous experimental method.
A position can be well-supported by facts and still be well-supported by a group for reasons other than facts.
EDIT: The statement above is a truism. I also don’t think a group’s support for or opposition against evolution is a sufficient indicator of all other group opinions being correct.
Downvoting is a good evidence for groupthink. This site uses the same mechanism for up/downvoting comments as Reddit, so:
Go to a random subreddit and figure out what their groupthink is. It’s usually very blatant.
Make some comments agreeing or disagreeing with groupthink but otherwise being similar.
See which are upvoted and which are downvoted.
Extrapolate to lesswrong by reference class forecasting.
So for example, reddit believers largely believe in evolution. Make a comment in favour and a comment against, the former goes up while the latter goes down, and groupthink is proven. I think you need a more rigorous experimental method.
A position can be well-supported by facts and still be well-supported by a group for reasons other than facts.
EDIT: The statement above is a truism. I also don’t think a group’s support for or opposition against evolution is a sufficient indicator of all other group opinions being correct.