system
A chat on subreddit /r/wallstreetbets
human
Oh yeah, actual research and real analysis of the cashflows/ER could've  revealed that something was off.  
  
 But wsb DD that goes as far as looking at 2-3 ratios, revenue, and asking your cousin's friend if he still buys Under armour (that's if you're lucky)? Nah couldn't have helped

gpt
I remember the guy who bought an underarmor shirt 5 years ago and felt like it was a good reason to buy calls because it's such a good shirt. I think that was his literal dd.