
Background
Historically, the U.S. economy has taken roughly 15–20 years to double in nominal GDP. For instance, it increased from around $10 trillion in 2000 to about $20 trillion in 2017. Some experts argue that an AGI—or an AI passing the Turing test—could dramatically boost productivity and compress this timeline. This question explores how many years after such a milestone it will take for U.S. nominal GDP to double.
Resolution Criteria
- Event Trigger 
 A widely recognized, public declaration that an AI system has achieved AGI or passed the Turing test (e.g., via official government statements, major scientific bodies, or broad consensus among AI researchers).
- Baseline 
 The official BEA “Current-Dollar GDP” for the first full calendar year following the recognized AGI/Turing test event becomes the baseline.- Example: If the declaration occurs in 2030, then 2031 is the baseline year. 
 
- Time Check - Starting with the first full calendar year after the baseline, compare each year’s BEA “Current-Dollar GDP” to the baseline figure. 
- If GDP is at least twice the baseline in Year N (where N is the number of years after the baseline), that is the first year in which nominal GDP has doubled. 
- Example: Declaration in 2030 → Baseline year = 2031 → Then check 2032 (1 year after baseline), 2033 (2 years), etc., until GDP is at least double. 
 
- Timing - Use the first published annual estimate for each year to determine when nominal GDP has doubled relative to the baseline. 
- The earliest year that meets or exceeds double the baseline GDP is the resolution point for the question. 
 
Fine Print
- Nominal GDP refers exclusively to “current-dollar GDP” as reported by the U.S. Bureau of Economic Analysis (BEA). 
- If the BEA changes its reporting format or becomes temporarily unavailable, a comparable official U.S. government source may be used. 
- Real (inflation-adjusted) GDP is not considered for this question. 
- “Widely recognized” for AGI/Turing test status is based on a combination of official or expert consensus statements.