it all depends if its his/her job to be a sniper. if so then yes. if not then no.
Martin Luther didn't start his own reformation because he obviously wasn't the only guy who was thinking; why would i want all my hard earned money to go and do get used on the different church taxes.
For lying, you may be grounded as a punishment.
The Romans didn't event the sewers, alphabet or roads but they develop those things. They dint event the underfloor heating, concrete, or the calendar that are modern calendar is based on. The concrete played an important part in the Roman building, helping them construct structures like aqueducts that included arches.