I don’t know about visual art but there is about music. Exposing a baby to complex music (many notes), like classical and jazz can help develop perfect pitch. The brain learns musical notes like it learns language.
Probably rusted out. Sometimes some top rails are carelessly welded which leaves a gap where it attaches to the square tube. In time, water accumulates inside the tube and pools on the bottom, rusting away from the inside out. To the naked eye it might just look like fine since it’s covered by 17 coats of paint, but structurally it’s just corn flakes.
SOURCE: Grew up in the Caribbean and Louisiana. First salt (Caribbean) then rain & half-assed everything (Louisiana).