From Longman Dictionary of Contemporary Englishwith the benefit of hindsight/experiencewith the benefit of hindsight/experienceused to say it is easier to know the right thing to do after something has happened or if you have a lot of experience He admitted that, with the benefit of hindsight, the original launch had not been large enough. → benefit
Examples from the Corpus
with the benefit of hindsight/experience• But let's not get too smart-aleck with the benefit of hindsight.• Neither player took it seriously but, with the benefit of hindsight, both admitted that the offer was probably serious.• If I should wander into the uncharted minefield of personal opinion it is only with the benefit of hindsight.• Hugh Young, fund manager, admitted that with the benefit of hindsight the original launch was not large enough. 