And when changes are made at the site, bad things can happen: https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse#Investigation https://en.wikipedia.or

And when changes are made at the site, bad things can happen: https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse#Investigation https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse...