It happens to us, quite often.
Many thousands of airline pilots in 108,000 (+) MTOW jets have no FMCs, and controllers in the US only recently seem to often forget that we are "slash Alpha". We can normally guess within plus or minus 10 degrees which heading is required, at least until the westerly winter winds increase in velocity in a few weeks.
Hey Meeester, "we don't need no stinkin" microchips in (or under) our cockpits. Just chocolate chip cookies from 'Subway', the finest in airport or (layover, i.e. MKE, JAX) gas station dining: only 15 miles from the white beaches.
There are two totally different kinds of aviation these days in the transport communities, which encompass two entirely different workloads (other than during initial training and IOE)-you see, huge numbers of us must actually FLY each leg, and our planes need us there all of the time.
(coffee stains and in-flight dessert).