Remove all grammatical mistakes from the given text
To summarize, If psychology was involved in the building of Hyatt Regency walkway collapse, which was a practicable measure, this unfortunate accident would have been eliminate at the very beginning.
To summarize, If psychology had been involved in the building of the Hyatt Regency walkway collapse, which was a practicable measure, this unfortunate accident would have been eliminated at the very beginning.