^ no they are not thinkers, they just do as they are told by the boss. The trouble is that he forgets things ! Probably because he is so busy, too many projects on the go at once. he forgot to tell them about the bathroom stuff, and they are not going to do something on their own initiative, that's not the Thai way. They are just labourers. Did they go to a trade school ? no probably not but that's not unusual in Thailand, is it ? I've got no problem with the quality of what these guys are doing, just with the boss not supervising properly.
We are out at the site every morning, and back again in the evening. That's how we picked up this error in the bathroom.