That was my exact thought when seeing some new contractors training on the job with my first house.   They had left the sub-floor exposed over the weekend that happened to feature over 1.5" of rain.   The manager assured me that this was not a concern and that "we do this all the time".  I am sure that they did but something felt off.

Fast forward 10 months and guess what was getting replaced by the home builder...

New hardwoods for me.  A re-do was actually a good thing at that point as I had got the color way off.  The stress of having to fight them to replace the entire first floor as it buckled up like a washboard was brutal though.

From that day forward, I wanted to learn all I could about the home building process.

It pained me that it was too little to late for my house, but I still wanted to educate myself on the best practices for new construction.

Much to my surprise, prefabricated construction checked all the boxes for said best practices.