afterknowledge

after- +‎ knowledge

afterknowledge (uncountable)

1. Knowledge acquired later, or after the event.
   • 1980, W. M. Scammell, The International Economy since 1945, page 123:

     With the afterknowledge of history it is hard to understand why contemporaries did not, in 1964, interpret the march of events as we do now – as a process leading to inevitable breakdown in the seventies.

• hindsight