You know what Martin, it does my head in, it really does.
I'm a 2-D sort of guy, great with maps and roads (which are, as far we humings are concerned, are definitely 2-D).
When it comes to 3-D my pea-like brain cries enough. It's like flying. At the sort of speeds I used to fly, which is about as fast as I Drive or ride, everything was 2-D. OK, I would bank over but that was just like cornering on a bike really.
Watching the 'Kings of the Skies', the expose on a year in the life of the Red Arrows (again!) I fully understand why I never bothered trying for aircrew; birds and fools and all that...
These guys, when they arrive as rookies, are about as good as it gets when it comes to flying. They all have numerous tours on the very latest fast jets doing stuff even the birds can't do. And yet, there is that look of terror on their faces when they are faced with 3-D stunts 7 feet from some other scared rookie.
I saw the same look on my face when I was trying to work out wtf was going on when I couldn't make it 'scrape'. Twist it this way, push it up, turn it round, turn me round, try again.
Eventually I realised it was the 7 year olds and I can live with that