I could draw any type of bike you asked me too as I have been obsessed with bikes since I was about 4 years old and I am quite good at drawing.
Ok get a piece of paper and pen and draw one of these (I’d choose the easiest):
Moulton Tsr8 (extra points for isometric projection 😉)
Raleigh Chopper
Raleigh Twenty
Dursley Pedersen
Whyte prst-1
How did you do? (No cheating)
(I imagine the above being almost as difficult to imagine/draw if unfamiliar as would be the double diamond bicycle for any regular citizen?)
I think it’s safe to say that a bicycle is a confusing abstract array of tubing and danglies for those who haven’t spent much time in their lives putting one together/taking apart/poring over brochures?
Drawing accurately from memory is difficult of course. It’s kind of a school-kid trick to pretend that you haven’t practised drawing the same thing over and over and then turn up to school and wow your peers with your lightning ballpoint rendition of ‘fat person bending over’, or a ‘wot, no big nosed face peering over a wall?’, or ‘three Mexicans peeing in a bucket’. Or a ‘Raleigh Chopper’.
I’m certain that I can draw a tree fairly well (most cannot), or some shoes, or a building or even a human face, but ask me to draw a certain car and I’d be stuffed. Any car, actually!