retrospective 與 retroactive有何區別?

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retrospective (adjective)

 

涉及以往的;追溯的;回顧的

(RETRO: backward, back, behind; SPEC: look at; examine) is thinking about or looking back at the past

 

relating to or thinking about the past:

a retrospective album of solo Freddie Mercury tracks

Source: https://bit.ly/2SnrpB1

Example: Let’s take a retrospective look at the popular 90s sitcom, Friends.

 



retroactive (adjective • formal)

 

有追溯效力的;溯及既往的

(ACTIVE: to drive, draw out or forth, move) is when something is done NOW but made effective from a time in the past.


If a law or decision, etc. is retroactive, it has effect from a date before it was approved:

the first British law to have retroactive effect

Source: https://bit.ly/2Sn8czd

Example: The tax-free retroactive minimum wage increase is effective immediately.

The nine percent increase will see the basic wage bar move from $64,000 to $70,000 weekly. Citizens will retroactively receive payment at the new rate from January 2019 to the present.

 


tldr: Retroactive affects the past. Retrospective only looks at the past.

 

NOTE: In a legal context, a retrospective statute affects the future only. It considers a past event, but affects only the future.

Sources:
https://legalresponse.org/legaladvice/941/
https://brians.wsu.edu/2016/05/25/retrospective-retroactive/

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