Don
Sorry, but if the race is scheduled for 73 (or whatever) laps then those laps are counted from the time the red lights go out.
The Parade Lap cannot, by definition, be one of those laps.
Certainly, when I was single-seater racing (a long time ago and way down the lists) a ten-lap race meant ten laps from when the flag went down.
Point for discussion - IMHO John Surtees was the best racing driver ever. He was World Champion on both motorbike and car.
Should the FIA return to the old system when we had both Grand Prix cars and F1 cars (different classes) racing in the same race? Starts of 30-plus cars certainly gave entertainment value.
Colyn.