alt Hacker NewsAlso there is survivorship bias.
The olden times were no stranger to slapdash, poor quality construction, but most of it has been demolished either due to having low perceived value or due to not lasting as long and people not doing the necessary lifecycle replacements.
I had to scroll way too far to find this comment!
All the terribly kept tenements that housed 10 families on two floors were also "traditional," but you can't even find them now. Even in places where there are some left, the ones still standing were probably the best of the bunch AND have been extensively repaired since.