“All scientific work is incomplete
- whether it be observational or experimental. All scientific work is liable to be upset or modified by advancing knowledge. That does not confer upon us a freedom to ignore the knowledge we already have
- or to postpone the action that it appears to demand at a given time. Who knows
- asked Robert Browning
- but the world may end tonight? True
- but on available evidence most of us make ready to commute on 8:30 the next day.” Sir Austin Bradford Hill
- as quoted in his landmark 1965 paper on causation.