“Think about taxiing out for takeoff and crossing several big runways with no ground control. (“Ummm … you’re sure this is OK?”)”
When I was learning to drive (was it really 55. years ago?), my father taught me, when at a stop sign about to turn left onto a busy street, look both ways 3 times, then “Go!” (Which I still do, By the way). I imagine the same applies only now looking in 3 dimensions: left, right, left up, right up, x 3 then throttle in and get it done!