Retrospect
Retrospect , intransitive verb
[Latin retrospicere; retro back + specere, spectum, to look. See Spy, and cf. Expect.]
To look backward; hence, to affect or concern what is past.
It may be useful to retrospect to an early period.
Retrospect , noun
A looking back on things past; view or contemplation of the past. — Cowper
We may introduce a song without retrospect to the old comedy.