One comment was “it was easier and more natural for a right-handed architect to draw plans for a staircase with a right-handed spiral” There’s also the claim

One comment was “it was easier and more natural for a right-handed architect to draw plans for a staircase with a right-handed spiral” There’s also the claim that 30% of staircases are anti-clockwise. That’s a lot for any statement of always or mostly clockwise.