double bass | Double (association football) | double | Doppler effect | Mass Effect | Double Dragon | body double | Double bass | double (baseball) | double agent | double feature | Special effect | Mass Effect 3 | Mamee Double-Decker | Magnus effect | Double Dare | Archimedes' principle | Venturi effect | the double | Mössbauer effect | Hall effect | uncertainty principle | sound effect | Mass Effect 2 | Kondo effect | Hall effect sensor | double platinum | Double Dragon (TV series) | double-decker bus | Double (baseball) |
For example, the principle of double effect, originated by Thomas Aquinas, holds that actions with both good and bad consequences are morally acceptable in specific circumstances, and the question is how this principle applies to vaccination.