A classification problem is correlation vs causation. Sunspots and mini skirts have been correlated with stock market returns to some degree, but it tends to be a tenuous connection not guaranteed to hold up over time, or to actually have any meaningful relevance whatsoever. It’s easy to oversell models.
![The Economist on using phrenology for hiring and lending decisions: "Some might argue that face-based analysis is more meritocratic" […] "For people without access to credit, that could be a blessing"](https://lemmy.ml/pictrs/image/14f5a0b4-82b6-498d-a689-36c2824dd296.png){kind=link}
A classification problem is correlation vs causation. Sunspots and mini skirts have been correlated with stock market returns to some degree, but it tends to be a tenuous connection not guaranteed to hold up over time, or to actually have any meaningful relevance whatsoever. It’s easy to oversell models.