Since the author has not been able to figure out how much the postal service charges itself for delivery, this notion, while sounding meritorious and politically correct, will not be mentioned again.
The postal service delivers mail for free.
mnli hypothesis: The postal service delivers mail for free. premise: Since the author has not been able to figure out how much the postal service charges itself for delivery, this notion, while sounding meritorious and politically correct, will not be mentioned again.