A claim can only live where checking it is cheap enough. Everywhere else on this map, claims die or mislead.
FIG. 1. Where a claim can live. Claims that cost more to check than they are worth drift into hype or go unread. After Tegmark, "On the dimensionality of spacetime", arXiv gr-qc/9702052 (1997), Fig. 1.
Pick a region
Each field is a kind of claim. Tap one to see what lives there this week.