How did Anthropic measure AI's "theoretical capabilities" in the job market?

How did Anthropic measure AI's "theoretical capabilities" in the job market?

If you follow the ongoing debate over AI's growing economic impact, you may have seen the graphic below floating around this month. It comes from an Anthropic report on the labor market impacts of AI and is meant to compare the current "observed exposure" of occupations to LLMs (in red) to the "theoretical capability" of those same LLMs (in blue) across 22 job categories. While the current "observed exposure" area is interesting in its own right…