

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.






30 gt of co2 is the new aspirational net 0 :(. That is still 3ppm per year increase. Feedbacks likely to make it worse.