Two men in hard hats and safety neon vests on scaffolding working outside in the daylight.
The men are very careful on the scaffold.
Men working on scaffolding does not mean they are being careful.
Just because men are in hard hats and safety neon vests does not mean they are very careful on the scaffold.
The men may be wearing personal protection equipment, but that does not mean they are being very careful on the scaffolding.