Reviving an old General Semantics proposal: borrowing from scientific notation and using subscripts like 'Gwern2020' for denoting sources (like citation, timing, or medium) might be a useful trick for clearer writing, compared to omitting such information or using standard cumbersome circumlocutions.
Moved to gwern.net
Note for anyone who (like me) wanted to know what the Kesselman Estimative Words are:
Almost certain: 86-99%
Highly likely: 71-85%
Likely: 56-70%
Chances a little better [or less] than even: 46-55%
Unlikely: 31-45%
Highly unlikely: 16-30%
Remote: 1-15%