Nevertheless--the nevertheless paragraph ineluctably follows the to be sure one--it would be a mistake to try to turn back the clock.
Attempting to turn back the clock would be a mistake.
Trying to turn back the clock would be the best idea they've had this entire time.
Do you not think it could be?
A biker riding downhill
A couple is relaxing in the park.
Two dogs mingle around a branch.
The man is singing with the crowd.
The mailer has to use the postal system.